Non nucleoside reverse transcriptase inhibitors

Abstract

Compounds of formula (I): ##STR00001## wherein Ar, X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein. The compounds are useful as reverse transcriptase inhibitors against wild type and single or double mutant strains of HIV.

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to novel compounds which inhibit HIV reverse transcriptase, a method for the treatment of HIV infection using such compounds, and to pharmaceutical compositions comprising such compounds.

BACKGROUND OF THE INVENTION

The disease known as acquired immune deficiency syndrome (AIDS) is caused by the human immunodeficiency virus (HIV), particularly the strain known as HIV-1. In order for HIV to be replicated by a host cell, the information of the viral genome must be integrated into the host cell's DNA. However, HIV is a retrovirus, meaning that its genetic information is in the form of RNA. The HIV replication cycle therefore requires a step of transcription of the viral genome (RNA) into DNA, which is the reverse of the normal chain of events. An enzyme that has been aptly dubbed reverse transcriptase (RT) accomplishes the transcription of the viral RNA into DNA. The HIV virion includes copies of RT along with the viral RNA.

Reverse transcriptase has three known enzymatic functions; it acts as an RNA-dependent DNA polymerase, as a ribonuclease, and as a DNA-dependent DNA polymerase. Acting as an RNA-dependent DNA polymerase, RT transcribes a single-stranded DNA copy of the viral RNA. Acting as a ribonuclease, RT destroys the original viral RNA, and frees the DNA just produced from the original RNA. Finally, acting as a DNA-dependent DNA polymerase, RT makes a second, complementary DNA strand, using the first DNA strand as a template. The two strands form double-stranded DNA, which is integrated into the host cell's genome by another enzyme called integrase.

Compounds that inhibit the enzymatic functions of HIV-1 reverse transcriptase will inhibit replication of HIV-1 in infected cells. Such compounds are useful in the prevention or treatment of HIV-1 infection in human subjects, as demonstrated by known RT inhibitors such as zidovudine, didanosine, zalcitabine, stavudine, lamivudine, emtricitabine, abacavir, tenofovir, nevirapine, delavirdine and efavirenz, the main reverse transcriptase inhibitors thus far approved for use in the treatment of AIDS.

As with any antiviral therapy, use of RT inhibitors in the treatment of AIDS eventually leads to a virus that is less sensitive to the given drug. Resistance (reduced sensitivity) to these drugs is the result of mutations that occur in the reverse transcriptase segment of the pol gene. Several mutant strains of HIV have been characterized, and resistance to known therapeutic agents is believed to be due to mutations in the RT gene. One of the more commonly observed mutants clinically for the non-nucleoside reverse transcriptase inhibitors is the K103N mutant, in which a lysine (K), at codon 103, has been mutated to a asparagine (N) residue. Other mutants, which emerge with varying frequency during treatment using known antivirals, include single mutants Y181C, G190A, Y188C, and P236L, and double mutants K103NNY181C, K103N/P225H, K103NN1081 and K103N/L1001.

As antiviral use in therapy and prevention of HIV infection continues, the emergence of new resistant strains is expected to increase. There is therefore an ongoing need for new inhibitors of RT, which have different patterns of effectiveness against the various resistant mutants.

Antivirals active against HIV containing a thiadiazolyloxyacetamide or thiadiazolylthioacetamide moiety have been described in JP 07-188017 (Soyaku Gijutsu Kenkyusho) and non-nucleoside inhibitors of wild-type HIV reverse transcriptase containing triazolyl and imidazolyl moieties have been described in WO 2004/030611 (Ribapharm). The present invention provides novel compounds which show potent activity against wild type HIV reverse transcriptase as well as against single mutant and double mutant strains.

SUMMARY OF THE INVENTION

The invention provides compounds of formula (I) which are useful for treating HIV infection in a human infected by HIV. The compounds are potent inhibitors of wild-type (WT) and double mutant strains of HIV-1 RT, particularly the double mutation K103N/Y181C.

In a first aspect the invention provides a compound, represented by formula (I):

##STR00002## wherein Ar is a 5-membered aromatic heterocycle containing 1 to 4 heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted at a substitutable position with RAT, wherein R.sup.Ar is H, (C.sub.1-4)alkyl, CF.sub.3 or (C.sub.3-7)cycloalkyl and wherein the groups X and R.sup.1 are attached to positions on the Ar ring which are immediately adjacent to each other; X is selected from O and S; R.sup.1 is a group of formula:

##STR00003## R.sup.11 is halo; and R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are each independently selected from H, halo, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, cyano, --O--(C.sub.1-4)alkyl, --OCF.sub.3 and --N((C.sub.1-4)alkyl).sub.2, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or R.sup.12 and R.sup.13, R.sup.13 and R.sup.14, or R.sup.14 and R.sup.15 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N, wherein the remaining of R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are defined as hereinbefore; R.sup.2 is selected from halo, nitro and (C.sub.1-4)alkyl; R.sup.3 is selected from H and halo; R.sup.4 is selected from: a)

##STR00004## wherein R.sup.42 is bonded to position 2 or position 3 of the phenyl ring and is selected from H, halo and (C.sub.1-4)alkyl; and R.sup.41 is bonded to position 3 or position 4 of the phenyl ring and is selected from: i) (C.sub.1-4)alkyl substituted with --COOH, --COO(C.sub.1-4)alkyl, --C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2--(C.sub.1-4)alkyl, or --OH; ii) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; iii) --O--(C.sub.1-4)alkyl optionally substituted with --COOH, Het, or --N((C.sub.1-6)alkyl).sub.2, wherein said Het is optionally substituted with --OH or --COOH and wherein either or both of the (C.sub.1-6)alkyl groups in said --N((C.sub.1-6)alkyl).sub.2 are optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) --OH, --COOH, --COO(C.sub.1-4)alkyl, --SO.sub.2NH.sub.2, or --SO.sub.2-(C.sub.1-4)alkyl; provided that R.sup.42 and R.sup.41 may not both be bonded to position 3 of the phenyl ring at the same time; b) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; c) Het optionally substituted with (C.sub.1-6)alkyl, --NH.sub.2, --COOH, or (C.sub.2-4)alkenyl substituted with --COOH; d) --SO.sub.2N(R.sup.43)R.sup.44, wherein R.sup.43 is H or (C.sub.1-6)alkyl and R.sup.44 is selected from (C.sub.1-6)alkyl, phenyl, phenyl-(C.sub.1-4)alkyl-, --C(.dbd.O)NH(C.sub.1-4)alkyl, --C(.dbd.O)O(C.sub.1-4)alkyl, and Het; wherein said (C.sub.1-6)alkyl is optionally substituted with --OH or --COOH and wherein said Het is optionally substituted with (C.sub.1-6)alkyl; or R.sup.43 and R.sup.44, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-6)alkyl or --COOH; e) --O--(C.sub.1-4)alkyl substituted with --OH, --COOH or Het, wherein said Het is optionally substituted with --COOH or --COO(C.sub.1-6)alkyl; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH; f) --C(.dbd.O)N(R.sup.5)R.sup.6 or --O--CH.sub.2--C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 is H or (C.sub.1-6)alkyl and R.sup.6 is selected from: i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2, (C.sub.1-4)alkyl, (C.sub.2-4)alkenyl and Het; wherein said (C.sub.1-4)alkyl is optionally substituted with --COOH and said (C.sub.2-4)alkenyl is substituted with --COOH; ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--(C.sub.1-6)alkyl and Het; provided that the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; iii) phenyl-(C.sub.1-4)alkyl- wherein the phenyl portion of said phenyl-(C.sub.1-4)alkyl- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2, and --COOH; iv) (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- wherein the cycloalkyl portion of said (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- is optionally substituted with --COOH; v) Het optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, phenyl-(C.sub.1-4)alkyl- and --COOH; vi) (C.sub.3-7)cycloalkyl; and vii) --SO.sub.2--R.sup.61 wherein R.sup.61 is (C.sub.1-4)alkyl or phenyl; or R.sup.5 and R.sup.6, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, --COOH and --COO(C.sub.1-6)alkyl; g) --NHC(.dbd.O)--R.sup.7 wherein R.sup.7 is selected from: i) (C.sub.1-6)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --O--(C.sub.1-4)alkyl, --NHC(.dbd.O)--(C.sub.1-4)alkyl, phenyl and Het; wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--(C.sub.1-4)alkyl, --NO.sub.2, --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2, and (C.sub.1-6)alkyl optionally substituted with from one to three halo substituents; ii) phenyl optionally substituted with --OH, halo or --COOH; iii) --NHR.sup.71 wherein R.sup.71 is phenyl or phenyl-(C.sub.1-4)alkyl-, wherein said phenyl is optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) (C.sub.1-6)alkynyl, (C.sub.3-7)cycloalkyl or (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-; h) --NHSO.sub.2R.sup.8 wherein R.sup.8 is selected from phenyl, phenyl-(C.sub.1-4)alkyl- and Het; and i) --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COOH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2-(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R.sup.962 is phenyl, --COOH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--(C.sub.1-4)alkyl-N H(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, --O-Het, and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein each of said Het and the Het portion of said --O-Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; and wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COOH; wherein Het is a 4,5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2; or an enantiomer, diastereoisomer or tautomer thereof, including a salt or ester thereof.

According to a further aspect of the invention, there is provided a pharmaceutical composition, comprising a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, and optionally one or more pharmaceutically acceptable carriers.

According to yet another aspect of the invention, there is provided a pharmaceutical composition, comprising a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, in combination with one or more other antiretroviral drugs.

According to another aspect of the invention, there is provided a pharmaceutical composition for the treatment or prevention of HIV infection, comprising a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, and optionally one or more pharmaceutically acceptable carriers.

A further aspect of the invention provides a pharmaceutical composition for the treatment or prevention of HIV infection, comprising a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, and optionally one or more pharmaceutically acceptable carriers, in combination with one or more other antiretroviral drugs.

Another important aspect of the invention involves a method of treating or preventing an HIV infection in a mammal by administering to the mammal an anti-HIV effective amount of a compound of formula (I) as defined hereinbefore and hereinafter, a pharmaceutically acceptable salt or ester thereof, or a composition as described above, alone or in combination with at least one other antiretroviral agent, administered together or separately.

Still another aspect of the invention provides the use of a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, for the treatment or prevention of HIV infection in a mammal.

According to another aspect of the invention, there is provided a method of inhibiting HIV-1 replication by exposing the virus to an inhibitory amount of a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof.

Yet another aspect of the invention provides the use of a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, to inhibit HIV-1 replication.

According to another aspect of the invention, there is provided the use of a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, for the manufacture of a medicament for the treatment or prevention of an HIV infection.

According to yet another aspect of the invention, there is provided the use of a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof, for the manufacture of a medicament for the treatment or prevention of an HIV infection, in combination with one or more other antiretroviral drugs.

Another aspect of the invention provides an article of manufacture comprising a composition effective to treat an HIV infection or to inhibit the reverse transcriptase of HIV; and packaging material comprising a label which indicates that the composition can be used to treat infection by the human immunodeficiency virus; wherein the composition comprises a compound of formula (I) as defined hereinbefore and hereinafter, or a pharmaceutically acceptable salt or ester thereof.

DETAILED DESCRIPTION OF THE INVENTION

Definitions

The following definitions apply unless otherwise noted:

As used herein, the term "(C.sub.1-n)alkyl", either alone or in combination with another radical, is intended to mean acyclic straight or branched chain alkyl radicals containing from one to n carbon atoms respectively. Examples of such radicals include, but are not limited to, methyl (Me), ethyl (Et), propyl (Pr), 1-methylethyl (iPr), butyl (Bu), 1-methylpropyl, 2-methylpropyl (iBu), and 1,1-dimethylethyl (tBu), wherein the abbreviations commonly used herein are given in brackets.

As used herein, the term "--O--(C.sub.1-n)alkyl", either alone or in combination with another radical, refers to alkoxy radicals containing for one to n carbon atoms and includes, but is not limited to, methoxy (--OMe), ethoxy (--OEt), propoxy (--OPr), 1-methylethoxy (-OiPr), butoxy (--OBu) and 1,1-dimethylethoxy (-OtBu), wherein the abbreviations commonly used herein are given in brackets. When an --O--(C.sub.1-n)alkyl group is substituted, it is understood to be substituted on the (C.sub.1-n)alkyl portion thereof.

As used herein, the term "--S--(C.sub.1-n)alkyl", either alone or in combination with another radical, refers to alkylthio radicals containing one to n carbon atoms and includes methylthio (-SMe), ethylthio (-SEt), propylthio (-SPr), 1-methylethylthio (-S-iPr), butylthio (-SBu) and 1,1-dimethylethylthio (-StBu), wherein the abbreviations commonly used herein are given in brackets. When an --S--(C.sub.1-n)alkyl group is substituted, it is understood to be substituted on the (C.sub.1-n)alkyl portion thereof.

The term "oxo" as used herein means an oxygen atom attached to a carbon atom as a substituent by a double bond (.dbd.O).

The term "thioxo" as used herein means an sulfur atom attached to a carbon atom as a substituent by a double bond (.dbd.S).

As used herein, the term "halo" means a halo radical selected from bromo, chloro, fluoro or iodo.

As used herein, the term "(C.sub.2-n)alkenyl", either alone or used with another radical, means an unsaturated, acyclic radical containing two to n carbon atoms, at least two of which are bonded to each other by a double bond and includes, but is not limited to, --CH.dbd.CH.sub.2, --CH.sub.2CH.dbd.CH.sub.2, --CH.sub.2CH.dbd.CHCH.sub.3 and --CH(Me)CH.dbd.CH.sub.2. The cis and trans isomers, and mixtures thereof, of the (C.sub.2-n)alkenyl radical can be encompassed by the term. A (C.sub.2-n)alkenyl radical may be substituted on any of the carbon atoms thereof which would otherwise bear a hydrogen atom.

The term "(C.sub.2-n)alkynyl", as used herein, wherein n is an integer, either alone or in combination with another radical, is intended to mean an unsaturated, acyclic straight chain radical containing two to n carbon atoms, at least two of which are bonded to each other by a triple bond. Examples of such radicals include, but are not limited to, ethynyl, 1-propynyl, 2-propynyl, and 1-butynyl.

The term "(C.sub.3-m)cycloalkyl" as used herein, wherein m is an integer, either alone or in combination with another substituent, means a cycloalkyl substituent containing from 3 to m carbon atoms and includes, but is not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.

The term "(C.sub.3-m)cycloalkyl-(C.sub.1-n)alkyl-" as used herein, wherein n and m are both integers, means an alkyl radical containing from 1 to n carbon atoms to which a cycloalkyl radical containing from 3 to m carbon atoms is directly linked; including, but not limited to, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, 1-cyclopentylethyl, 2-cyclopentylethyl, cyclohexylmethyl, 1-cyclohexylethyl and 2-cyclohexylethyl. When a (C.sub.3-m)cycloalkyl-(C.sub.1-n)alkyl- group is substituted, it is understood, unless otherwise specified, that the substituent may be attached to either the cycloalkyl or the alkyl portion thereof.

The term "phenyl-(C.sub.1-n)alkyl-" as used herein, wherein n is an integer, means an alkyl radical containing from 1 to n carbon atoms to which a phenyl radical is directly linked; including, but not limited to, phenylmethyl (also known as benzyl), 1-phenylethyl, 2-phenylethyl, 2-phenyl-1-methylethyl, 1-phenyl-1-methylethyl, 1-phenylpropyl, 2-phenylpropyl, and 3-phenylpropyl. When a phenyl-(C.sub.1-n)alkyl-group is substituted, it is understood, unless otherwise specified, that the substituent may be attached to either the phenyl or the alkyl portion thereof.

As used herein, the term "Het" is defined as a 4,5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2, unless otherwise specified.

As used herein, the term "heterocycle", either alone or in combination with another radical, is intended to mean a monovalent radical derived by removal of a hydrogen from a 5- or 6-membered saturated or unsaturated (including aromatic) heterocycle containing 1 to 4 heteroatoms selected from N, O and S. Examples of such heterocycles include, but are not limited to, azetidine, pyrrolidine, tetrahydrofuran, thiazolidine, pyrrole, furan, thiophene, 1H-imidazole, isoxazole, oxazole, thiazole, tetrazole, piperidine, piperazine, 1,4-dioxane, 4-morpholine, 4-thiomorpholine, pyridine, pyridine-N-oxide, pyridazine, pyrazine or pyrimidine, or the following heterocycles:

##STR00005##

As used herein, the term "heterobicycle" either alone or in combination with another radical, means a heterocycle as defined above fused to another cycle, be it a heterocycle, a phenyl or any other cycle. Examples of such heterobicycles include, but are not limited to, indole, benzimidazole, benzofuran, thiazolo[4,5-b]-pyridine, quinoline, isoquinoline, or coumarin, or the following:

##STR00006##

As used herein, the term "inhibitor of HIV replication" refers to an agent capable of substantially reducing or essentially eliminating the ability of HIV-1 reverse transcriptase to replicate a DNA copy from an RNA template.

As used herein, the term "single or double mutant strains" means that either one or two amino acid residues that are present in WT HIV-1 strain have been replaced by residues not found in the WT strain. For example, for the single mutant Y181C, the tyrosine at residue 181 has been replaced by a cysteine residue. Similarly, for the double mutant K103NNY181C, an asparagine residue has replaced the lysine at residue 103 and a cysteine residue has replaced the tyrosine at residue 181.

The term "salt thereof" means any acid and/or base addition salt of a compound according to the invention; preferably a pharmaceutically acceptable salt thereof.

As used herein, the term "pharmaceutically acceptable salt" means a salt of a compound which is, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response, and the like, commensurate with a reasonable benefit/risk ratio, generally water or oil-soluble or dispersible, and effective for their intended use. Where applicable and compatible with the chemical properties of the compound of formula (I), the term includes pharmaceutically-acceptable acid addition salts and pharmaceutically-acceptable base addition salts. Lists of suitable salts are found in, e.g., S. M. Birge et al., J. Pharm. Sci., 1977, 66, pp. 1-19.

The term "pharmaceutically-acceptable acid addition salt" means those salts which retain the biological effectiveness and properties of the free bases and which are not biologically or otherwise undesirable, formed with inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, sulfamic acid, nitric acid, phosphoric acid, and the like, and organic acids such as acetic acid, trichloroacetic acid, trifluoroacetic acid, adipic acid, alginic acid, ascorbic acid, aspartic acid, benzenesulfonic acid, benzoic acid, 2-acetoxybenzoic acid, butyric acid, camphoric acid, camphorsulfonic acid, cinnamic acid, citric acid, digluconic acid, ethanesulfonic acid, glutamic acid, glycolic acid, glycerophosphoric acid, hemisulfic acid, heptanoic acid, hexanoic acid, formic acid, fumaric acid, 2-hydroxyethanesulfonic acid (isethionic acid), lactic acid, maleic acid, hydroxymaleic acid, malic acid, malonic acid, mandelic acid, mesitylenesulfonic acid, methanesulfonic acid, naphthalenesulfonic acid, nicotinic acid, 2-naphthalenesulfonic acid, oxalic acid, pamoic acid, pectinic acid, phenylacetic acid, 3-phenylpropionic acid, picric acid, pivalic acid, propionic acid, pyruvic acid, salicylic acid, stearic acid, succinic acid, sulfanilic acid, tartaric acid, p-toluenesulfonic acid, undecanoic acid, and the like.

The term "pharmaceutically-acceptable base addition salt" means those salts which retain the biological effectiveness and properties of the free acids and which are not biologically or otherwise undesirable, formed with inorganic bases such as ammonia or hydroxide, carbonate, or bicarbonate of ammonium or a metal cation such as sodium, potassium, lithium, calcium, magnesium, iron, zinc, copper, manganese, aluminum, and the like. Particularly preferred are the ammonium, potassium, sodium, calcium, and magnesium salts. Salts derived from pharmaceutically-acceptable organic nontoxic bases include salts of primary, secondary, and tertiary amines, quaternary amine compounds, substituted amines including naturally occurring substituted amines, cyclic amines and basic ion-exchange resins, such as methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, isopropylamine, tripropylamine, tributylamine, ethanolamine, diethanolamine, 2-dimethylaminoethanol, 2-diethylaminoethanol, dicyclohexylamine, lysine, arginine, histidine, caffeine, hydrabamine, choline, betaine, ethylenediamine, glucosamine, methylglucamine, theobromine, purines, piperazine, piperidine, N-ethylpiperidine, tetramethylammonium compounds, tetraethylammonium compounds, pyridine, N,N-dimethylaniline, N-methylpiperidine, N-methylmorpholine, dicyclohexylamine, dibenzylamine, N,N-dibenzylphenethylamine, 1-ephenamine, N,N'-dibenzylethylenediamine, polyamine resins, and the like. Particularly preferred organic nontoxic bases are isopropylamine, diethylamine, ethanolamine, trimethylamine, dicyclohexylamine, choline, and caffeine.

The term "ester thereof" means any ester of a compound in which any of the carboxyl functions of the molecule is replaced by an alkoxycarbonyl function, including but not limited to pharmaceutically acceptable esters thereof.

The term "pharmaceutically acceptable ester" as used herein, either alone or in combination with another substituent, means esters of the compound of formula (I) in which any of the carboxyl functions of the molecule, but preferably the carboxy terminus, is replaced by an alkoxycarbonyl function:

##STR00007## in which the R moiety of the ester is selected from alkyl (e.g. methyl, ethyl, n-propyl, tert-butyl, n-butyl); alkoxyalkyl (e.g. methoxymethyl); alkoxyacyl (e.g. acetoxymethyl); aralkyl (e.g. benzyl); aryloxyalkyl (e.g. phenoxymethyl); aryl (e.g. phenyl), optionally substituted with halogen, (C.sub.1-4)alkyl or (C.sub.1-4)alkoxy. Other suitable esters can be found in Design of prodrugs, Bundgaard, H. Ed. Elsevier (1985). Such pharmaceutically acceptable esters are usually hydrolyzed in vivo when administered to a mammal and transformed into the acid form of the compound of formula (I). With regard to the esters described above, unless otherwise specified, any alkyl moiety present advantageously contains 1 to 16 carbon atoms, particularly 1 to 6 carbon atoms. Any aryl moiety present in such esters advantageously comprises a phenyl group. In particular the esters may be a (C.sub.1-16)alkyl ester, an unsubstituted benzyl ester or a benzyl ester substituted with at least one halogen, (C.sub.1-6)alkyl, (C.sub.1-6)alkoxy, nitro or trifluoromethyl.

As used herein, the designation whereby a bond is drawn as emanating from the center of a ring, such as, for example,

##STR00008## means that the bond may be attached to any free position on the ring that would otherwise be substituted by a hydrogen atom, unless specified otherwise. Such bonds may be linked to substituents of the ring or may indicate the linkage of the ring as a substituent on another structure.

As used herein, the term "treatment" means the administration of a compound or composition according to the present invention to alleviate or eliminate symptoms of the HIV disease and/or to reduce viral load in a patient.

As used herein, the terms "prevention" and "prophylaxis", used interchangeably, mean the administration of a compound or composition according to the present invention post-exposure of the individual to the virus but before the appearance of symptoms of the disease, and/or prior to the detection of the virus in the blood, to prevent the appearance of symptoms of the disease and/or to prevent the virus from reaching detectible levels in the blood and the administration of a compound or composition according to the present invention to prevent perinatal transmission of HIV-1 from mother to baby, by administration to the mother before giving birth and to the child within the first days of life.

The following signs

##STR00009## are used in sub-formulas to indicate the bond which is connected to the rest of the molecule as defined.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

In the following preferred embodiments, groups and substituents of the compounds of formula (I) according to this invention are described in detail.

Ar:

According to a preferred embodiment of the first aspect of the present invention there is provided a compound of formula (I)

##STR00010## wherein X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein and wherein Ar is selected from:

##STR00011## wherein R.sup.Ar is as defined herein and wherein the designation

##STR00012## represents the bond to R.sup.1 and the designation

##STR00013## represents the bond to X.

More preferably, Ar is selected from

##STR00014##

Most preferably, Ar is

##STR00015##

Therefore, the present invention preferably provides compounds of formulas (Ia) to (Ii):

##STR00016## wherein X, R.sup.Ar, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein.

More preferably, the present invention provides compounds of formulas:

##STR00017## wherein X, R.sup.Ar, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein.

R.sup.Ar is preferably selected from H. CH.sub.3, CF.sub.3 and cyclopropyl.

Most preferably, the present invention provides compounds of formula (Ia)

##STR00018## wherein X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein.

Any and each individual definition of Ar as set out herein may be combined with any and each individual definition of X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 as set out herein.

X:

When Ar, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined hereinbefore and hereinafter, preferably, X is S.

Any and each individual definition of X as set out herein may be combined with any and each individual definition of Ar, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 as set out herein.

R.sup.1:

When Ar, X, R.sup.2, R.sup.3 and R.sup.4 are as defined hereinbefore and hereinafter, R.sup.1 is a group of formula:

##STR00019##

R.sup.11 is preferably chloro or bromo.

More preferably, R.sup.11 is chloro.

Preferably, R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo or R.sup.12 and R.sup.13 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

More preferably, R.sup.12 is selected from H, methyl, CF.sub.3, chloro, bromo and cyclopropyl; or R.sup.12 and R.sup.13 are linked, together with the carbon atoms to which they are attached, so that R.sup.1 is a fused ring system selected from naphthyl, benzothiazolyl and quinolyl.

Still more preferably, R.sup.12 is H, CF.sub.3 or cyclopropyl.

Most preferably, R.sup.12 is H.

Preferably, R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

More preferably, R.sup.13 is selected from H, methyl, CF.sub.3, 1-methylethyl, 1,1-dimethylethyl, cyclopropyl, cyclopropylmethyl, 1-methylcyclopropyl, and --OCF.sub.3; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, so that R.sup.1 is a fused ring system selected from naphthyl, benzothiazolyl, indanyl and quinolyl.

Most preferably, R.sup.13 is H, methyl, 1,1-dimethylethyl or cyclopropyl.

Preferably, R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

More preferably, R.sup.14 is selected from H, fluoro, chloro, bromo, cyano, methyl, CF.sub.3, 1,1-dimethylethyl, cyclopropyl, cyclopropylmethyl, methoxy, 1-methylethoxy, and dimethylamino, or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, so that R.sup.1 is a fused ring system selected from naphthyl and indanyl.

Still more preferably, R.sup.14 is H, cyclopropyl or CF.sub.3.

Most preferably, R.sup.14 is H.

Preferably, R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3.

More preferably, R.sup.15 is H, fluoro, chloro, methyl or CF.sub.3.

Most preferably, R.sup.15 is H.

Therefore, preferred R.sup.1 substituents are selected from:

##STR00020## ##STR00021## ##STR00022## ##STR00023##

More preferably, R.sup.1 is selected from:

##STR00024##

Most preferably, R.sup.1 is selected from:

##STR00025##

Any and each individual definition of R.sup.1 as set out herein may be combined with any and each individual definition of Ar, X, R.sup.2, R.sup.3 and R.sup.4 as set out herein.

R.sup.2:

When Ar, X, R.sup.1, R.sup.3 and R.sup.4 are as defined hereinbefore and hereinafter, preferably, R.sup.2 is selected from halo, nitro and methyl.

More preferably, R.sup.2 is halo or nitro.

Even more preferably, R.sup.2 is halo.

Yet more preferably, R.sup.2 is chloro or bromo.

Most preferably, R.sup.2 is chloro.

Any and each individual definition of R.sup.2 as set out herein may be combined with any and each individual definition of Ar, X, R.sup.1, R.sup.3 and R.sup.4 as set out herein. R.sup.3.

When Ar, X, R.sup.1, R.sup.2 and R.sup.4 are as defined hereinbefore and hereinafter, most preferably, R.sup.3 is H or fluoro.

Any and each individual definition of R.sup.3 as set out herein may be combined with any and each individual definition of Ar, X, R.sup.1, R.sup.2 and R.sup.4 as set out herein. R.sup.4

When Ar, X, R.sup.1, R.sup.2 and R.sup.3 are as defined hereinbefore and hereinafter, R.sup.4 is preferably defined as follows.

In one alternative embodiment, R.sup.4 is

##STR00026## wherein R.sup.42 is bonded to position 2 or position 3 of the phenyl ring and is selected from H, halo and (C.sub.1-4)alkyl; and R.sup.41 is bonded to position 3 or position 4 of the phenyl ring and is selected from: i) (C.sub.1-4)alkyl substituted with --COOH, --COO(C.sub.1-4)alkyl, --C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2-(C.sub.1-4)alkyl, or --OH; ii) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; iii)-O--(C.sub.1-4)alkyl optionally substituted with --COOH, Het, or --N((C.sub.1-6)alkyl).sub.2, wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N, wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2, said Het being optionally substituted with --OH or --COOH; and wherein either or both of the (C.sub.1-6)alkyl groups in said --N((C.sub.1-6)alkyl).sub.2 are optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) --OH, --COOH, --COO(C.sub.1-4)alkyl, --SO.sub.2NH.sub.2, or --SO.sub.2-(C.sub.1-4)alkyl; provided that R.sup.42 and R.sup.41 may not both be bonded to position 3 of the phenyl ring at the same time.

Preferably R.sup.42 is selected from H, Cl, F and CH.sub.3. Most preferably, R.sup.42 is H.

Preferably R.sup.41 is selected from: i) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl and 1,1-dimethylethyl, each of which being substituted with --COOH, --COOCH.sub.3, --COOCH.sub.2CH.sub.3--C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2--CH.sub.3, or --OH; ii) --CH.dbd.CH--COOH, --CH.dbd.CH--COOCH.sub.3 or --CH.dbd.CH--COOCH.sub.2CH.sub.3; iii) --O--CH.sub.3 or --O--CH.sub.2CH.sub.3, each of which being optionally substituted with --COOH, Het, or --N((C.sub.1-4)alkyl).sub.2, wherein Het is selected from

##STR00027## wherein said Het is optionally substituted with --OH or --COOH and wherein either or both of the (C.sub.1-4)alkyl groups in said --N((C.sub.1-4)alkyl).sub.2 are optionally substituted with --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; and iv) --OH, --COOH, --COOCH.sub.3, --COOCH.sub.2CH.sub.3, --SO.sub.2NH.sub.2, or --SO.sub.2--CH.sub.3.

More preferably within this embodiment, R.sup.41 is selected from --OH, --OCH.sub.3, --COOH, --COOCH.sub.3, --SO.sub.2CH.sub.3, --SO.sub.2NH.sub.2, --CH.sub.2COOH, --CH.sub.2COOCH.sub.3, --CH.sub.2CONH.sub.2, --CH.sub.2CH.sub.2OH, --CH.sub.2CH.sub.2COOH, --CH.sub.2CONHSO.sub.2CH.sub.3, --C(CH.sub.3).sub.2--COOH, --OCH.sub.2COOH,

##STR00028##

Most preferably, R.sup.41 is selected from --CH.sub.2COOH, --C(CH.sub.3).sub.2--COOH, --OCH.sub.2COOH,

##STR00029##

In a preferable embodiment, R.sup.41 is bonded to position 4 of the phenyl ring.

In another alternative embodiment, R.sup.4 is selected from: b) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; c) Het optionally substituted with (C.sub.1-6)alkyl, --NH.sub.2, --COOH, or (C.sub.2-4)alkenyl substituted with --COOH, wherein Het is a 5- or 6-membered aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; d) --SO.sub.2N(R.sup.43)R.sup.44, wherein R.sup.43 is H or (C.sub.1-6)alkyl and R.sup.44 is selected from (C.sub.1-6)alkyl, phenyl, phenyl-(C.sub.1-4)alkyl-, --C(.dbd.O)NH(C.sub.1-4)alkyl, --C(.dbd.O)O(C.sub.1-4)alkyl, and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; wherein said (C.sub.1-6)alkyl is optionally substituted with --OH or --COOH and wherein said Het is optionally substituted with (C.sub.1-6)alkyl; or R.sup.43 and R.sup.44, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-)alkyl or --COOH; e) --O--(C.sub.1-4)alkyl substituted with --OH, --COOH or Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N, wherein said Het is optionally substituted with --COOH or --COO(C.sub.1-6)alkyl; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH; and h) --NHSO.sub.2R.sup.8 wherein R.sup.8 is selected from phenyl, phenyl-(C.sub.1-4)alkyl- and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N.

Preferably within the scope of this embodiment, R.sup.4 is selected from: b) (C.sub.2-4)alkenyl substituted with --COOH or --COOCH.sub.3; c) Het optionally substituted with CH.sub.3, --NH.sub.2, --COOH, or --CH.dbd.CH--COOH; wherein Het is selected from

##STR00030## d) --SO.sub.2N(R.sup.43)R.sup.44, wherein R.sup.43 is H or CH.sub.3 and R.sup.44 is selected from (C.sub.1-4)alkyl, phenyl, phenyl-(C.sub.1-4)alkyl-, --C(.dbd.O)NHCH.sub.3, --C(.dbd.O)OCH.sub.3, and Het; wherein Het is selected from

##STR00031## and wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --COOH and wherein said Het is optionally substituted with CH.sub.3; or R.sup.43 and R.sup.44, together with the N to which they are attached, are linked together to form a 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with CH.sub.3 or --COOH; e) --O--(C.sub.1-4)alkyl substituted with --OH, --COOH or Het, wherein Het is selected from

##STR00032## and wherein said Het is optionally substituted with --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH; and h) --NHSO.sub.2R.sup.8 wherein R.sup.8 is selected from phenyl, phenylmethyl and

##STR00033##

More preferably within the scope of this embodiment R.sup.4 is selected from:

##STR00034## --SO.sub.2NHMe, --SO.sub.2NHCH(Me).sub.2, --SO.sub.2N(Me).sub.2, --SO.sub.2NH(CH.sub.2).sub.2OH, --SO.sub.2NHCH.sub.2COOH,

##STR00035## and --NHSO.sub.2R.sup.3 wherein

R.sup.8 is selected from phenyl, phenylmethyl and

##STR00036##

In still another alternative embodiment, R.sup.4 is --C(.dbd.O)N(R.sup.5)R.sup.6 or --O--CH.sub.2--C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 is H or (C.sub.1-6)alkyl and R.sup.6 is selected from: i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2, (C.sub.1-4)alkyl, (C.sub.2-4)alkenyl and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; wherein said (C.sub.1-4)alkyl is optionally substituted with --COOH and said (C.sub.2-4)alkenyl is substituted with --COOH; ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--(C.sub.1-6)alkyl and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group; provided that the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; iii) phenyl-(C.sub.1-4)alkyl- wherein the phenyl portion of said phenyl-(C.sub.1-4)alkyl- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2 and --COOH; iv) (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- wherein the cycloalkyl portion of said (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- is optionally substituted with --COOH; v) Het optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, phenyl-(C.sub.1-4)alkyl- and --COOH wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S; vi) (C.sub.3-7)cycloalkyl; and vii) --SO.sub.2--R.sup.6 wherein R.sup.61 is (C.sub.1-4)alkyl or phenyl; or R.sup.5 and R.sup.6, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, --COOH and --COO(C.sub.1-6)alkyl.

More preferably within this embodiment, R.sup.4 is --C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 and R.sup.6 are as defined herein.

Preferably, R.sup.5 is H or CH.sub.3 and R.sup.6 is selected from i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N(CH.sub.3).sub.2, CH.sub.3, COOH --CH.sub.2COOH, --CH.sub.2CH.sub.2COOH,

##STR00037## ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--CH.sub.3 and Het, wherein Het is selected from

##STR00038## provided that the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; iii) phenyl-CH.sub.2-- or phenyl-CH.sub.2CH.sub.2--, wherein the phenyl portion of said phenyl-CH.sub.2-- or phenyl-CH.sub.2CH.sub.2-- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2, and --COOH; iv) (4-carboxycyclohexyl)methyl; v) Het optionally substituted with one or two substituents each independently selected from methyl, phenylmethyl- and --COOH, wherein said Het is selected from

##STR00039## vi) cyclopropyl; vii) --SO.sub.2--CH.sub.3 and --SO.sub.2-Ph; or R.sup.5 and R.sup.6, together with the N to which they are attached, are linked together to form a 6-membered saturated heterocycle which may optionally contain one further heteroatom independently selected from N and O; said heterocycle being optionally substituted with one or two substituents each independently selected from CH.sub.3 and --COOH.

More preferably, the group --N(R.sup.5)R.sup.6 is selected from --NHCH.sub.3, --NHCH.sub.2CH.sub.3,

##STR00040## ##STR00041## ##STR00042##

Most preferably, the group --N(R.sup.5)R.sup.6 is selected from

##STR00043##

In a further alternative embodiment, R.sup.4 is --NHC(.dbd.O)--R.sup.7 wherein R.sup.7 is selected from: i) (C.sub.1-6)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --O--(C.sub.1-4)alkyl, --NHC(.dbd.O)--(C.sub.1-4)alkyl, phenyl and Het wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group; and wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--(C.sub.1-4)alkyl, --NO.sub.2, --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2, and (C.sub.1-6)alkyl optionally substituted with from one to three halo substituents; ii) phenyl optionally substituted with --OH, halo or --COOH; iii) --NHR.sup.71 wherein R.sup.71 is phenyl or phenyl-(C.sub.1-4)alkyl-, wherein said phenyl is optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) (C.sub.1-6)alkynyl, (C.sub.3-7)cycloalkyl or (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-.

Preferably, R.sup.7 is selected from: i) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, 1-methylbutyl, 2-methylbutyl or 3-methylbutyl, each of which being optionally substituted with one or two substituents each independently selected from --COOH, --O--CH.sub.3, --NHC(.dbd.O)--CH.sub.3, phenyl and Het; wherein Het is selected from

##STR00044## and wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--CH.sub.3, --NO.sub.2, --COOH, --NH.sub.2, --NHCH.sub.3, --N(CH.sub.3).sub.2, and CF.sub.3; ii) phenyl optionally substituted with --OH, Cl or --COOH; iii) --NH-phenyl or phenyl-CH.sub.2--NH--, wherein the phenyl portion of said --NH-phenyl and phenyl-CH.sub.2--NH-- is optionally substituted with --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; and iv) ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl or cyclohexylmethyl.

More preferably, R.sup.7 is selected from:

##STR00045## ##STR00046## ##STR00047## ##STR00048##

Most preferably, R.sup.7 is selected from:

##STR00049##

In yet another alternative embodiment, R.sup.4 is --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COOH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.94', --SO.sub.2--(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R.sup.962 is phenyl, --COOH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--(C.sub.1-4)alkyl-NH(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, --O-Het, and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein each of said Het and the Het portion of said --O-Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; and wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COOH; wherein Het is in each instance independently a 4,5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2.

Preferably, R.sup.9 is selected from: i) H, --COOH, phenyl, ethenyl or 2-propenyl; ii) cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, each of which being optionally substituted with --OH, --COOH or CH.sub.3, wherein said CH.sub.3 is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is

##STR00050## or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with one or two substituents each independently selected from CH.sub.3 and --OH; iii) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2methylpropyl, 1,1-dimethylethyl, pentyl or 1-ethylpropyl, each of which being optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NHCH.sub.3, CF.sub.3, --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; b) Het optionally substituted with CH.sub.3 or --OH; wherein Het is selected from

##STR00051## c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H, CH.sub.3 or CH.sub.2CH.sub.3 and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2--CH.sub.3 and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, cyclopropyl, Het, or phenyl optionally substituted with --OH; wherein Het is selected from

##STR00052## and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, cyclopropyl or Het; wherein Het is selected from

##STR00053## and wherein said cyclopropyl is optionally substituted with --COOH and wherein said Het is optionally substituted with CH.sub.3 or --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl,

##STR00054## --N((C.sub.1-4)alkyl).sub.2, or Het; wherein Het is selected from

##STR00055## and wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-4)alkyl optionally substituted with

##STR00056## and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with

##STR00057## d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from cyclopropyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is CH.sub.3, CH.sub.2CH.sub.3, phenyl, cyclopropyl, or --N(CH.sub.3).sub.2; and R.sup.962 is phenyl, --COOH, --N(CH.sub.3).sub.2, or Het; wherein Het is selected from

##STR00058## and wherein said phenyl is optionally substituted with --N(CH.sub.3).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--CH.sub.2CH.sub.2--NHCH.sub.3, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl,

##STR00059## and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein Het is selected from

##STR00060## and N and wherein said Het is optionally substituted with one or two substituents each independently selected from halo, oxo, CH.sub.3 and --OH; and wherein R.sup.971 is H or CH.sub.3 and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--CH.sub.3, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, cyclopropyl, phenyl and Het; wherein Het is selected from

##STR00061## and wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N(CH.sub.3).sub.2 or

##STR00062## provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.0-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said cyclopropyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --CH.dbd.CH--COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with CH.sub.3 or --COOH.

More preferably, R.sup.9 is selected from H, --COOH,

##STR00063## --(CH.sub.2).sub.2CH.sub.3, --CH.sub.2OH, --(CH.sub.2).sub.2OH, --(CH.sub.2).sub.3OH, --(CH.sub.2).sub.4OH, --C(Me).sub.2OH, --C(Me).sub.2CH.sub.2OH,

##STR00064## --C(Me).sub.2Ome,

##STR00065## --CH.sub.2N(Et).sub.2, --CH.sub.2COOH, --(CH.sub.2).sub.2COOH, --C(Me).sub.2CO.sub.2H, --C(Me).sub.2COOMe, --C(Me).sub.2CH.sub.2COOH, --CH.sub.2OC(O)NH.sub.2, --(CH.sub.2).sub.3OC(O)NH.sub.2,

##STR00066## ##STR00067## ##STR00068## ##STR00069## ##STR00070## ##STR00071##

Still more preferably, R.sup.9 is selected from --COOH,

##STR00072## --(CH.sub.2).sub.2CH.sub.3, --CH.sub.2OH, --(CH.sub.2).sub.2OH, --(CH.sub.2).sub.3OH, --C(Me).sub.2OH, --C(Me).sub.2CH.sub.2OH, --C(Me).sub.2OMe,

##STR00073## --CH.sub.2COOH, --(CH.sub.2).sub.2COOH, --C(Me).sub.2CO.sub.2H, --C(Me).sub.2COOMe, --C(Me).sub.2CH.sub.2COOH, --CH.sub.2OC(O)NH.sub.2, --(CH.sub.2).sub.3OC(O)NH.sub.2,

##STR00074## ##STR00075## ##STR00076## ##STR00077## ##STR00078##

Most preferably, R.sup.9 is selected from

##STR00079## --CH.sub.2OH, --(CH.sub.2).sub.2OH, --(CH.sub.2).sub.3OH, --C(Me).sub.2OH, --C(Me).sub.2CH.sub.22H,

##STR00080## --C(Me).sub.2CO.sub.2H,

##STR00081## ##STR00082##

Any and each individual definition of R.sup.4 as set out herein may be combined with any and each individual definition of Ar, X, R.sup.1, R.sup.2 and R.sup.3 as set out herein.

Therefore, one embodiment of this invention provides a compound, represented by formula (I):

##STR00083## wherein Ar is a 5-membered aromatic heterocycle containing 1 to 4 heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted at a substitutable position with R.sup.Ar, wherein R.sup.Ar is H, (C.sub.1-4)alkyl, CF.sub.3 or (C.sub.3-7)cycloalkyl and wherein the groups X and R' are attached to positions on the Ar ring which are immediately adjacent to each other; X is selected from O and S; R.sup.1 is a group of formula:

##STR00084## R.sup.11 is halo; and R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are each independently selected from H, halo, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, cyano, --O--(C.sub.1-4)alkyl, --OCF.sub.3 and --N((C.sub.1-4)alkyl).sub.2, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or R.sup.12 and R.sup.13, R.sup.13 and R.sup.14, or R.sup.14 and R.sup.15 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N, wherein the remaining of R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are defined as hereinbefore; R.sup.2 is selected from halo, nitro and (C.sub.1-4)alkyl; R.sup.3 is selected from H and halo; R.sup.4 is selected from: a)

##STR00085## wherein R.sup.42 is bonded to position 2 or position 3 of the phenyl ring and is selected from H, halo and (C.sub.1-4)alkyl; and R.sup.41 is bonded to position 3 or position 4 of the phenyl ring and is selected from: i) (C.sub.1-4)alkyl substituted with --COOH, --COO(C.sub.1-4)alkyl, --C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2-(C.sub.1-4)alkyl, or --OH; ii) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; iii) --O--(C.sub.1-4)alkyl optionally substituted with --COOH, Het, or --N((C.sub.1-6)alkyl).sub.2, wherein said Het is optionally substituted with --OH or --COOH and wherein either or both of the (C.sub.1-6)alkyl groups in said --N((C.sub.1-6)alkyl).sub.2 are optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) --OH, --COOH, --COO(C.sub.1-4)alkyl, --SO.sub.2NH.sub.2, or --SO.sub.2--(C.sub.1-4)alkyl; provided that R.sup.42 and R.sup.41 may not both be bonded to position 3 of the phenyl ring at the same time; b) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; c) Het optionally substituted with (C.sub.1-6)alkyl, --NH.sub.2, --COOH, or (C.sub.2-4)alkenyl substituted with --COOH; d) --SO.sub.2N(R.sup.43)R.sup.44, wherein R.sup.43 is H or (C.sub.1-6)alkyl and R.sup.44 is selected from (C.sub.1-6)alkyl, phenyl, phenyl-(C.sub.1-4)alkyl-, --C(.dbd.O)NH(C.sub.1-4)alkyl, --C(.dbd.O)O(C.sub.1-4)alkyl, and Het; wherein said (C.sub.1-6)alkyl is optionally substituted with --OH or --COOH and wherein said Het is optionally substituted with (C.sub.1-6)alkyl; or R.sup.43 and R.sup.44, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-6)alkyl or --COOH; e) --O--(C.sub.1-4)alkyl substituted with --OH, --COOH or Het, wherein said Het is optionally substituted with --COOH or --COO(C.sub.1-6)alkyl; f) --C(.dbd.O)N(R.sup.5)R.sup.6 or --O--CH.sub.2--C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 is H or (C.sub.1-6)alkyl and R.sup.6 is selected from: i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2, (C.sub.1-4)alkyl, (C.sub.2-4)alkenyl and Het; wherein said (C.sub.1-4)alkyl is optionally substituted with --COOH and said (C.sub.2-4)alkenyl is substituted with --COOH; ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--(C.sub.1-6)alkyl and Het; iii) phenyl-(C.sub.1-4)alkyl- wherein the phenyl portion of said phenyl-(C.sub.1-4)alkyl- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2, and --COOH; iv) (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- wherein the cycloalkyl portion of said (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- is optionally substituted with --COOH; v) Het optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, phenyl-(C.sub.1-4)alkyl- and --COOH; vi) (C.sub.3-7)cycloalkyl; and vii) --SO.sub.2--R.sup.61 wherein R.sup.61 is (C.sub.1-4)alkyl or phenyl; or R.sup.5 and R.sup.6, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, --COOH and --COO(C.sub.1-6)alkyl; g) --NHC(.dbd.O)--R.sup.7 wherein R.sup.7 is selected from: i) (C.sub.1-6)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --O--(C.sub.1-4)alkyl, --NHC(.dbd.O)--(C.sub.1-4)alkyl, phenyl and Het; wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--(C.sub.1-4)alkyl, --NO.sub.2, --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2, and (C.sub.1-6)alkyl optionally substituted with from one to three halo substituents; ii) phenyl optionally substituted with --OH, halo or --COOH; iii) --NHR.sup.71 wherein R.sup.71 is phenyl or phenyl-(C.sub.1-4)alkyl-, wherein said phenyl is optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) (C.sub.1-6)alkynyl, (C.sub.3-7)cycloalkyl or (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-; h) --NHSO.sub.2R.sup.8 wherein R.sup.8 is selected from phenyl, phenyl-(C.sub.1-4)alkyl- and Het; and i) --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, --COO(C.sub.1-16)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COOH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2--(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R.sup.962 is phenyl, --COOH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--(C.sub.1-4)alkyl-NH(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, --O-Het, and Het wherein said Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COOH; wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2; or an enantiomer, diastereoisomer or tautomer thereof, or a pharmaceutically acceptable salt or ester thereof.

A preferred embodiment provides a compound of formula (I) wherein: Ar is selected from:

##STR00086##

##STR00087## wherein R.sup.Ar is selected from H, CH.sub.3, CF.sub.3 and cyclopropyl and wherein the designation

##STR00088## represents the bond to R.sup.1 and the designation

##STR00089## represents the bond to X; X is S; R.sup.1 is a group of formula:

##STR00090## R.sup.11 is chloro or bromo; R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo; R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --CF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N; R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3; R.sup.2 is selected from halo, nitro and methyl; R.sup.3 is H or fluoro; and R.sup.4 is

##STR00091## wherein R.sup.42 is bonded to position 2 or position 3 of the phenyl ring and is selected from H, halo and (C.sub.1-4)alkyl; and R.sup.41 is bonded to position 3 or position 4 of the phenyl ring and is selected from: i) (C.sub.1-4)alkyl substituted with --COOH, --COO(C.sub.1-4)alkyl, --C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2--(C.sub.1-4)alkyl, or --OH; ii) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; iii) --O--(C.sub.1-4)alkyl optionally substituted with --COOH, Het, or --N((C.sub.1-6)alkyl).sub.2, wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N, wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2, said Het being optionally substituted with --OH or --COOH; and wherein either or both of the (C.sub.1-6)alkyl groups in said --N((C.sub.1-6)alkyl).sub.2 are optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) --OH, --COOH, --COO(C.sub.1-4)alkyl, --SO.sub.2NH.sub.2, or --SO.sub.2-(C.sub.1-4)alkyl; provided that R.sup.42 and R.sup.41 may not both be bonded to position 3 of the phenyl ring at the same time.

An alternative preferred embodiment provides a compound of formula (I) wherein: Ar is selected from:

##STR00092##

##STR00093## wherein R.sup.Ar is selected from H, CH.sub.3, CF.sub.3 and cyclopropyl and wherein the designation

##STR00094## represents the bond to R.sup.1 and the designation

##STR00095## represents the bond to X; X is S; R.sup.1 is a group of formula:

##STR00096## R.sup.11 is chloro or bromo; R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo; R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N; R.sup.16 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3; R.sup.2 is selected from halo, nitro and methyl; R.sup.3 is H or fluoro; and R.sup.4 is selected from: b) (C.sub.2-4)alkenyl substituted with --COOH or --COO(C.sub.1-4)alkyl; c) Het optionally substituted with (C.sub.1-6)alkyl, --NH.sub.2, --COOH, or (C.sub.2-4)alkenyl substituted with --COOH, wherein Het is a 5- or 6-membered aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; d) --SO.sub.2N(R.sup.43)R.sup.44, wherein R.sup.43 is H or (C.sub.1-6)alkyl and R.sup.44 is selected from (C.sub.1-6)alkyl, phenyl, phenyl-(C.sub.1-4)alkyl-, --C(.dbd.O)NH(C.sub.1-4)alkyl, --C(.dbd.O)O(C.sub.1-4)alkyl, and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; wherein said (C.sub.1-6)alkyl is optionally substituted with --OH or --COOH and wherein said Het is optionally substituted with (C.sub.1-6)alkyl; or R.sup.43 and R.sup.44, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-6)alkyl or --COOH; e) --O--(C.sub.1-4)alkyl substituted with --OH, --COOH or Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N, wherein said Het is optionally substituted with --COOH or --COO(C, r)alkyl; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH; and h) --NHSO.sub.2R.sup.8 wherein R.sup.8 is selected from phenyl, phenyl-(C.sub.1-4)alkyl- and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N.

Another alternative preferred embodiment provides a compound of formula (I) wherein: Ar is selected from:

##STR00097##

##STR00098## wherein R.sup.Ar is selected from H, CH.sub.3, CF.sub.3 and cyclopropyl and wherein the designation

##STR00099## represents the bond to R.sup.1 and the designation

##STR00100## represents the bond to X; X is S; R.sup.1 is a group of formula:

##STR00101## R.sup.11 is chloro or bromo; R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo; R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N; R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3; R.sup.2 is selected from halo, nitro and methyl; R.sup.3 is H or fluoro; and R.sup.4 is --C(.dbd.O)N(R.sup.5)R.sup.6 or --O--CH.sub.2--C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 is H or (C.sub.1-6)alkyl and R.sup.6 is selected from: i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2, (C.sub.1-4)alkyl, (C.sub.2-4)alkenyl and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N; wherein said (C.sub.1-4)alkyl is optionally substituted with --COOH and said (C.sub.2-4)alkenyl is substituted with --COOH; ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--(C.sub.1-6)alkyl and Het wherein Het is a 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing 1 to 4 heteroatoms each independently selected from O, S and N wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group; provided that the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; iii) phenyl-(C.sub.1-4)alkyl- wherein the phenyl portion of said phenyl-(C.sub.1-4)alkyl- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2 and --COOH; iv) (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- wherein the cycloalkyl portion of said (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl- is optionally substituted with --COOH; v) Het optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, phenyl-(C.sub.1-4)alkyl- and --COOH wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S; vi) (C.sub.3-7)cycloalkyl; and vii)-SO.sub.2--R.sup.61 wherein R.sup.61 is (C.sub.1-4)alkyl or phenyl; or R.sup.5 and R.sup.6, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl, --COOH and --COO(C.sub.1-6)alkyl.

Yet another alternative preferred embodiment provides a compound of formula (I) wherein: Ar is selected from:

##STR00102##

##STR00103## wherein R.sup.Ar is selected from H, CH.sub.3, CF.sub.3 and cyclopropyl and wherein the designation

##STR00104## represents the bond to R.sup.1 and the designation

##STR00105## represents the bond to X; X is S; R.sup.1 is a group of formula:

##STR00106## R.sup.11 is chloro or bromo; R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo; R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N; R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3; R.sup.2 is selected from halo, nitro and methyl; R.sup.3 is H or fluoro; and R.sup.4 is --NHC(.dbd.O)--R.sup.7 wherein R.sup.7 is selected from: i) (C.sub.1-6)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --O--(C.sub.1-4)alkyl, --NHC(.dbd.O)--(C.sub.1-4)alkyl, phenyl and Het wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group; and wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--(C.sub.1-4)alkyl, --NO.sub.2, --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2, and (C.sub.1-6)alkyl optionally substituted with from one to three halo substituents; ii) phenyl optionally substituted with --OH, halo or --COOH; iii) --NHR.sup.71 wherein R.sup.71 is phenyl or phenyl-(C.sub.1-4)alkyl-, wherein said phenyl is optionally substituted with --COOH or --COO(C.sub.1-4)alkyl; and iv) (C.sub.1-6)alkynyl, (C.sub.3-7)cycloalkyl or (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-.

Still another alternative preferred embodiment provides a compound of formula (I) wherein: Ar is selected from:

##STR00107##

##STR00108## wherein R.sup.Ar is selected from H, CH.sub.3, CF.sub.3 and cyclopropyl and wherein the designation

##STR00109## represents the bond to R.sup.1 and the designation

##STR00110## represents the bond to X; X is S; R.sup.1 is a group of formula:

##STR00111## R.sup.11 is chloro or bromo; R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo; R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; R.sup.14 is selected from H, halo, cyano, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2; or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N; R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3; R.sup.2 is selected from halo, nitro and methyl; R.sup.3 is H or fluoro; and R.sup.4 is --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COOH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2-(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.96' and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R.sup.962 is phenyl, --COOH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--(C.sub.1-4)alkyl-NH(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, --O-Het, and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein each of said Het and the Het portion of said --O-Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; and wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COOH; wherein Het is in each instance independently a 4,5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2.

A more preferred embodiment provides a compound of formula (Ia)

##STR00112## wherein X is S; R.sup.1 is selected from:

##STR00113## R.sup.2 is chloro; R.sup.3 is H or fluoro; and R.sup.4 is

##STR00114## wherein R.sup.42 is bonded to position 2 or position 3 of the phenyl ring and is selected from H, Cl, F and CH.sub.3; and R.sup.41 is bonded to position 4 of the phenyl ring and is selected from: i) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl and 1,1-dimethylethyl, each of which being substituted with --COOH, --COOCH.sub.3, --COOCH.sub.2CH.sub.3--C(.dbd.O)NH.sub.2, --C(.dbd.O)NHSO.sub.2--CH.sub.3, or --OH; ii) --CH.dbd.CH--COOH, --CH.dbd.CH--COOCH.sub.3 or --CH.dbd.CH--COOCH.sub.2CH.sub.3; iii) --O--CH.sub.3 or --O--CH.sub.2CH.sub.3, each of which being optionally substituted with --COOH, Het, or --N((C.sub.1-4)alkyl).sub.2, wherein Het is selected from

##STR00115## wherein said Het is optionally substituted with --OH or --COOH and wherein either or both of the (C.sub.1-4)alkyl groups in said --N((C.sub.1-4)alkyl).sub.2 are optionally substituted with --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; and iv) --OH, --COOH, --COOCH.sub.3, --COOCH.sub.2CH.sub.3, --SO.sub.2NH.sub.2, or --SO.sub.2--CH.sub.3.

An alternative more preferred embodiment provides a compound of formula (Ia)

##STR00116## wherein X is S; R.sup.1 is selected from:

##STR00117## R.sup.2 is chloro; R.sup.3 is H or fluoro; and R.sup.4 is --C(.dbd.O)N(R.sup.5)R.sup.6 wherein R.sup.5 is H or CH.sub.3 and R.sup.6 is selected from i) phenyl optionally substituted with one or two substituents each independently selected from --OH, --COOH, --N(CH.sub.3).sub.2, CH.sub.3, --CH.sub.2COOH, --CH.sub.2CH.sub.2COOH,

##STR00118## ii) (C.sub.1-4)alkyl optionally substituted with one or two substituents each independently selected from --COOH, --OH, --S--CH.sub.3 and Het, wherein Het is selected from

##STR00119##

##STR00120## provided that the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; iii) phenyl-CH.sub.2-- or phenyl-CH.sub.2CH.sub.2--, wherein the phenyl portion of said phenyl-CH.sub.2-- or phenyl-CH.sub.2CH.sub.2-- is optionally substituted with one or two substituents each independently selected from --OH, --NH.sub.2, and --COOH; iv) (4-carboxycyclohexyl)methyl; v) Het optionally substituted with one or two substituents each independently selected from methyl, phenylmethyl- and --COOH, wherein said Het is selected from

##STR00121##

##STR00122## vi) cyclopropyl; vii)-SO.sub.2--CH.sub.3 and --SO.sub.2-Ph; or R.sup.6 and R.sup.6, together with the N to which they are attached, are linked together to form a 6-membered saturated heterocycle which may optionally contain one further heteroatom independently selected from N and O; said heterocycle being optionally substituted with one or two substituents each independently selected from CH.sub.3 and --COOH.

Another alternative more preferred embodiment provides a compound of formula (Ia)

##STR00123## wherein X is S; R.sup.1 is selected from:

##STR00124## R.sup.2 is chloro; R.sup.3 is H or fluoro; and R.sup.4 is --NHC(.dbd.O)--R.sup.7 wherein R.sup.7 is selected from: i) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, 1-methylbutyl, 2-methylbutyl or 3methylbutyl, each of which being optionally substituted with one or two substituents each independently selected from

##STR00125## and wherein said phenyl is optionally substituted with one or two substituents each independently selected from halo, --OH, --O--CH.sub.3, --NO.sub.2, --COOH, --NH.sub.2, --NHCH.sub.3, --N(CH.sub.3).sub.2, and CF.sub.3; ii) phenyl optionally substituted with --OH, Cl or --COOH; iii) --NH-phenyl or phenyl-CH.sub.2--NH--, wherein the phenyl portion of said --NH-phenyl and phenyl-CH.sub.2--NH-- is optionally substituted with --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; and iv) ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl or cyclohexylmethyl.

Still another alternative more preferred embodiment provides a compound of formula (Ia)

##STR00126## wherein X is S; R.sup.1 is selected from:

##STR00127## R.sup.2 is chloro; R.sup.3 is H or fluoro; and R.sup.4 is --C.dbd.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, phenyl, ethenyl or 2-propenyl; ii) cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, each of which being optionally substituted with --OH, --COOH or CH.sub.3, wherein said CH.sub.3 is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is

##STR00128## or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with one or two substituents each independently selected from CH.sub.3 and --OH; iii) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, pentyl or 1-ethylpropyl, each of which being optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NHCH.sub.3, CF.sub.3, --COOH, --COOCH.sub.3 or --COOCH.sub.2CH.sub.3; b) Het optionally substituted with CH.sub.3 or --OH; wherein Het is selected from

##STR00129## c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H, CH.sub.3 or CH.sub.2CH.sub.3 and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2--CH.sub.3 and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, cyclopropyl, Het, or phenyl optionally substituted with --OH; wherein Het is selected from

##STR00130## R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, cyclopropyl or Het; wherein Het is selected from

##STR00131## and wherein said cyclopropyl is optionally substituted with --COOH and wherein said Het is optionally substituted with CH.sub.3 or --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl,

##STR00132## --N((C.sub.1-4)alkyl).sub.2 or Het; wherein Het is selected from

##STR00133## and wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-4)alkyl optionally substituted with

##STR00134## and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with

##STR00135## d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from cyclopropyl, --SO.sub.2--R.sup.96' and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is CH.sub.3, CH.sub.2CH.sub.3, phenyl, cyclopropyl, or --N(CH.sub.3).sub.2; and R.sup.962 is phenyl, --COOH, --N(CH.sub.3).sub.2, or Het; wherein Het is selected from

##STR00136## and wherein said phenyl is optionally substituted with --N(CH.sub.3).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--CH.sub.2CH.sub.2--NHCH.sub.3, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl,

##STR00137##

##STR00138## and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to 0 is not also directly bonded to --OH, or --NH--(C.sub.3-7)cycloalkyl; wherein Het is selected from

##STR00139##

##STR00140## and N and wherein said Het is optionally substituted with one or two substituents each independently selected from halo, oxo, CH.sub.3 and --OH; and wherein R.sup.971 is H or CH.sub.3 and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--CH.sub.3, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, cyclopropyl, phenyl and Het; wherein Het is selected from

##STR00141## and

##STR00142## wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N(CH.sub.3).sub.2 or

##STR00143## provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said cyclopropyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --CH.dbd.CH--COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with CH.sub.3 or --COOH.

Specific Embodiments

Included within the scope of this invention is each single compound of formula (I) as presented in Tables 1 to 7.

The compounds of formula (I) are effective inhibitors of wild type HIV as well as of the double mutation enzyme K103NNY181C. The compounds of the invention may also inhibit the single mutation enzymes V106A, Y188L, K103N, Y181C, P236L and G190A (among others). The compounds may also inhibit other double mutation enzymes including K103N/P225H, K103NN1081 and K103N/L1001.

The compounds of formula (I) possess inhibitory activity against HIV-1 replication. When administered in suitable dosage forms, they are useful in the treatment of AIDS, ARC and related disorders associated with HIV-1 infection. Another aspect of the invention, therefore, is a method for treating HIV-1 infection which comprises administering to a human being, infected by HIV-1, a therapeutically effective amount of a compound of formula (I), as described above. Whether it is termed treatment or prophylaxis, the compounds may also be used to prevent perinatal transmission of HIV-1 from mother to baby, by administration to the mother before giving birth and to the child within the first days of life.

The compounds of formula (I) may be administered in single or divided doses by the oral, parenteral or topical routes. A suitable oral dosage for a compound of formula (I) would be in the range of about 0.5 mg to 3 g per day. A preferred oral dosage for a compound of formula (I) would be in the range of about 100 mg to 800 mg per day for a patient weighing 70 kg. In parenteral formulations, a suitable dosage unit may contain from 0.1 to 250 mg of said compounds, preferably 1 mg to 200 mg, whereas for topical administration, formulations containing 0.01 to 1% active ingredient are preferred. It should be understood, however, that the dosage administration from patient to patient would vary. The dosage for any particular patient will depend upon the clinician's judgment, who will use as criteria for fixing a proper dosage the size and condition of the patient as well as the patient's response to the drug.

When the compounds of the present invention are to be administered by the oral route, they may be administered as medicaments in the form of pharmaceutical preparations that contain them in association with a compatible pharmaceutical carrier material. Such carrier material can be an inert organic or inorganic carrier material suitable for oral administration. Examples of such carrier materials are water, gelatin, talc, starch, magnesium stearate, gum arabic, vegetable oils, polyalkylene-glycols, petroleum jelly and the like.

The compounds of formula (I) can be used in combination with one or more other antiretroviral drug known to one skilled in the art, as a combined preparation useful for simultaneous, separate or sequential administration for treating or preventing HIV infection in an individual. Examples of antiretroviral drugs, including approved and investigational drugs, that may be used in combination therapy with compounds of formula (I) include but are not limited to: NRTIs (nucleoside or nucleotide reverse transcriptase inhibitors; including but not limited to zidovudine, didanosine, zalcitabine, stavudine, lamivudine, emtricitabine, abacavir, and tenofovir); NNRTIs (non-nucleoside reverse transcriptase inhibitors; including but not limited to nevirapine, delavirdine, efavirenz, capravirine, etravirine, rilpivirine, GW695634 and BILR 355); protease inhibitors (including but not limited to ritonavir, tipranavir, saquinavir, nelfinavir, indinavir, amprenavir, fosamprenavir, atazanavir, lopinavir, VX-385 and TMC-114); entry inhibitors including but not limited to CCR5 antagonists (including but not limited to maraviroc (UK-427,857), SCH417690, GW873140 and TAK-652), CXCR4 antagonists (including but not limited to AMD-11070), fusion inhibitors (including but not limited to enfuvirtide (T-20)) and others (including but not limited to PRO-542 and BMS488043); integrase inhibitors (including but not limited to c-1605, BMS-538158 and JTK-303); TAT inhibitors; maturation inhibitors (including but not limited to PA457); immunomodulating agents (including but not limited to levamisole); and antifungal or antibacterial agents (including but not limited to fluconazole). Moreover, a compound of formula (I) can be used with at least one other compound of formula (I).

The pharmaceutical preparations can be prepared in a conventional manner and finished dosage forms can be solid dosage forms, for example, tablets, dragees, capsules, and the like, or liquid dosage forms, for example solutions, suspensions, emulsions and the like. The pharmaceutical preparations may be subjected to conventional pharmaceutical operations such as sterilization. Further, the pharmaceutical preparations may contain conventional adjuvants such as preservatives, stabilizers, emulsifiers, flavor-improvers, wetting agents, buffers, salts for varying the osmotic pressure and the like. Solid carrier material which can be used include, for example, starch, lactose, mannitol, methyl cellulose, microcrystalline cellulose, talc, silica, dibasic calcium phosphate, and high molecular weight polymers (such as polyethylene glycol).

For parenteral use, a compound of formula (I) can be administered in an aqueous or non-aqueous solution, suspension or emulsion in a pharmaceutically acceptable oil or a mixture of liquids, which may contain bacteriostatic agents, antioxidants, preservatives, buffers or other solutes to render the solution isotonic with the blood, thickening agents, suspending agents or other pharmaceutically acceptable additives. Additives of this type include but are not limited to, for example, tartrate, citrate and acetate buffers, ethanol, propylene glycol, polyethylene glycol, complex formers (such as EDTA), antioxidants (such as sodium bisulfite, sodium metabisulfite, and ascorbic acid), high molecular weight polymers (such as liquid polyethylene oxides) for viscosity regulation and polyethylene derivatives of sorbitol anhydrides. Preservatives may also be added if necessary, such as benzoic acid, methyl or propyl paraben, benzalkonium chloride and other quaternary ammonium compounds.

The compounds of this invention may also be administered as solutions for nasal application and may contain in addition to the compounds of this invention suitable buffers, tonicity adjusters, microbial preservatives, antioxidants and viscosity-increasing agents in an aqueous vehicle. Examples of agents used to increase viscosity are polyvinyl alcohol, cellulose derivatives, polyvinylpyrrolidone, polysorbates or glycerin. Microbial preservatives added may include benzalkonium chloride, thimerosal, chloro-butanol or phenylethyl alcohol.

Additionally, the compounds provided by the invention may be administerable by suppository.

Methodology and Synthesis

In general, the compounds of formula (I) are prepared by known methods from readily available starting materials, using reaction conditions known to be suitable for the reactants. Schemes 1-7 illustrate the general methods used to prepare the compounds of formula (I).

General methods for preparing a compound of formula (I), wherein Y is halo (e.g. Cl, Br or I), P is a protecting group, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, Ar, and X are as defined herein and R.sup.4a is a precursor of R.sup.4 (or identical to R.sup.4), are described in Scheme 1.

##STR00144##

Briefly, thiol or alcohol 1(i) can be alkylated with an .alpha.-haloacetic acid ester in the presence of a base to give 1(ii), which can be transformed to acid 1(iii) after hydrolysis of the ester protecting group. Alternatively, 1(iii) can be obtained directly by alkylation with .alpha.-haloacetic acid. The reaction of acid 1(iii) with aniline 1(iv) can provide the amide 1(v) using the standard methods for preparing amides. Alternatively, amide 1(v) can also be obtained by the alkylation of 1(i) with 1(vi), which is readily available from aniline 1(iv) and .alpha.-haloacetyl chloride or bromide. Finally, amide 1(v) can be readily transformed to a compound of formula (I), if R.sup.4a is different from R.sup.4, using methods known to the skilled in the art. For example, when R.sup.4a is --OH, or a protected form thereof, the group R.sup.4a may be transformed to an --OCH.sub.2COOH group by alkylation with an .alpha.-haloacetic ester fragment, followed by deprotection of the ester, to give compound 1(vi). Coupling of the acid with amines of the formula HN(R.sup.5)R.sup.6, using methods well known in the art, provide compounds of general formula 1 (vii). Alternatively, when R.sup.4a is --COOH or a protected form thereof, the group R.sup.4a may be transformed to a group of formula --CON(R.sup.5)R.sup.6 by coupling with amines of the formula HN(R.sup.5)R.sup.6, using methods well known in the art, to provide compounds of general formula 1(viii). Furthermore, when R.sup.4a is --NH.sub.2, or a protected form thereof, the group R.sup.4a may be transformed to a group of formula --NH(C.dbd.O)R.sup.7 by well known acylation procedures, to give compounds of general formula 1(ix). In addition, protecting group removal, alkylation, coupling, amide formation or functional group modifications are contemplated, to carry out other transformations of compound 1(v) to other compounds of formula (I).

Anilines such as 1(iv) are either commercially available or can be prepared by known methods. General methods for preparing substituted anilines 2(ii) and 2(iii), wherein Y is halo (e.g. Br or I), R.sup.2, R.sup.3, R.sup.9, R.sup.41 and R.sup.42 are as defined herein and R.sup.9a and R.sup.41a are precursors of (or identical to) R.sup.9 and R.sup.41, respectively, are described in Scheme 2.

##STR00145##

Briefly, 4-bromo or 4-iodoaniline 2(i) can be readily transformed to anilines 2(ii) or 2(iii) using the typical conditions of the Sonogashira reaction or the Suzuki coupling.

The preparation of compounds of formula (I) wherein Ar is tetrazole, 1,2,4-triazole, imidazole or 1,2,3-triazole and R.sup.11, R.sup.12, R.sup.13, R.sup.14, R.sup.15 and R.sup.Ar are as defined herein is described in Scheme 3.

##STR00146##

The key isocyanates 3(ii) are commercially available or can be easily prepared by known methods from aniline 3(i). Tetrazole 3(iii) can be prepared by reacting isocyanate 3(ii) with sodium azide. Triazole 3(iv) can be obtained from the condensation of isocyanate 3(ii) with acylhydrazide followed by treatment with base or acid. Imidazole 3(v) can be obtained from 3(ii) by treatment with 1-amino-2,2-ethylenedioxypropane. Triazole 3(vi) can be prepared by reacting the lithium salt of trimethylsilyldiazomethane with 3(ii) followed by the alkylation with tert-butyl bromoacetate and potassium hydroxide treatment. Finally, the compounds of formula (I) can be obtained from 3(iii), 3(iv), 3(v) and 3(vi) using the additional steps described in Scheme 1.

The preparation of compounds of formula (I) wherein Ar is thiazole or thiadiazole, P is a protecting group and R.sup.11, R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are as defined herein is described in Scheme 4.

##STR00147##

The reaction of bromomethylketone 4(i) with benzotriazole followed with the treatment with p-toluenesulfonyl hydrazide gives intermediate 4(ii). The thiadiazole 4(iii) can be prepared from 4(ii) by treatment with thionyl chloride. The treatment of 4(iii) with thioglycolate gives 4(iv) and finally a compound of formula (I) using the sequence described in Scheme 1. The bromomethylketone 4(i) can also be transformed to sulfide 4(v) by reaction with thioglycolate in the presence of a base. The bromination of 4(v) followed by the treatment with thioformamide gives 4(vi) that can easily be transformed to a compound of formula (I) using the sequence described in Scheme 1.

The preparation of compounds of formula (I) wherein Ar is pyrazole, P is a protecting group, and R.sup.11, R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are as defined herein is described in Schemes 5-7.

##STR00148##

Pyrazole 5(ii) can be easily obtained by reacting hydrazine 5(i) with methyl 3,3-dimethoxypropionate. Hydroxypyrazole 5(ii) can be transformed to the corresponding thiol derivative 5(iii) with the Lawesson reagent. Finally, pyrazole derivatives 5(ii) and 5(iii) can be converted to compounds of formula (I) by using the sequence described in Scheme 1.

##STR00149##

The pyrazole derivatives 6(iv) and 6(vi) can be obtained starting with phenylacetate 6(i). The reaction of 6(i) with the appropriate electrophile, tert-butoxybis(dimethylamino)methane or acetic anhydride, can give intermediates 6(ii) and 6(v), which can be easily transformed to pyrazoles 6(iii) and 6(vi) respectively upon treatment with hydrazine. The methyl ether derivative 6(iii) can be transformed to the corresponding hydroxypyrazole 6(iv). Finally, using the steps described in Scheme 1, 6(iv) and 6(vi) can be converted to compounds of formula (I).

##STR00150##

Pyrazole 7(iii) can be obtained from the Claisen condensation of acetophenone 7(i) with ethyl formate in the presence of a base such as sodium methoxide to give 7(ii) followed by condensation with hydrazine. Pyrazole 7(iii) can be converted to the bromo derivative 7(iv) upon treatment with bromine. Pyrazole 7(iv) can be transformed to a mixture of isomers (7(v) and isomer), which upon treatment with n-butyllitium in the presence of (i-Pr.sub.3Si--S).sub.2, followed by the reaction with tetrabutylammonium fluoride in the presence of x-haloacetic acid ester can be converted to 7(vi). Finally, using the sequence of steps described in Scheme 1, 7(vi) can be transformed to compounds of formula (I).

Processes and reactants for preparing compounds of formula 1 are illustrated further by the examples hereinafter.

EXAMPLES

The present invention is illustrated in further detail by the following non-limiting examples. All reactions were performed in a nitrogen or argon atmosphere unless otherwise stated. Room temperature is 18 to 22.degree. C. (degrees Celsius). Solution percentages or ratios express a volume to volume relationship, unless stated otherwise. Purification by reverse phase HPLC (RP-HPLC) was performed using a gradient of MeCN/H.sub.2O containing TFA (0.06%) (CombiPrep ODS-AQ 50.times.20 mm, 5 .mu., 120A). Analytical HPLC was carried out under standard conditions using a Combiscreen ODS-AQ C18 reverse phase column, YMC, 50.times.4.6 mm i.d., 5 .mu.M, 120 .ANG. at 220 nM, elution with a linear gradient as described in the following table (Solvent A is 0.06% TFA in H.sub.2O; solvent B is 0.06% TFA in CH.sub.3CN):

TABLE-US-00001 Time (min) Flow (mL/min) Solvent A (%) Solvent B (%) 0 3.0 95 5 0.5 3.0 95 5 6.0 3.0 50 50 10.5 3.5 0 100

Abbreviations or symbols used herein include: Ac: acetyl; Boc: tert-butoxycarbonyl; Bu: butyl; tBu: 1,1-dimethylethyl (tert-butyl) tBuOH: tert-butanol; CHAPS: 3-{(3-cholamidopropyl)dimethylammonio}-1-propanesulfonate; DEAD: diethyl azodicarboxylate; DMF: N,N-dimethylformamide; DMSO: dimethylsulfoxide; dppf: 1,1'-bis(diphenylphosphino)ferrocene; DTT: DL-dithiothreitol; Et: ethyl; Et.sub.2O: diethyl ether; EtOH: ethanol; EtOAc: ethyl acetate; GSH: glutathione; HPLC: high performance liquid chromatography; iPr: 1-methylethyl (isopropyl); LiHMDS: lithium hexamethyldisilazide; Me: methyl; MeOH: methanol; MeCN: acetonitrile; n-BuLi: n-butyllithium; NaHMDS: sodium hexamethyldisilazide; NMR: nuclear magnetic resonance; Ph: phenyl; Pr: propyl; RP-HPLC: reverse phase high performance liquid chromatography; TBAF: tetrabutylammonium fluoride; TFA: trifluoroacetic acid; THF: tetrahydrofuran; TLC: thin layer chromatography. Syntheses

The following examples illustrate methods for preparing compounds of the invention.

Example 1

(Entry 2015) (Bl 211361)

##STR00151## a) Compound 1.2

To a solution of N-[4-(tert-butyl)phenyl]acetamide 1.1 (2.00 g, 10.5 mmol) in a mixture of acetic acid (3.0 mL) and 12 N HCl (4.6 mL) was added dropwise a solution of NaClO.sub.3 (170 mg, 1.60 mmol) in water (1 mL). After 30 min the resulting orange suspension was diluted with water (80 mL), the precipitate was filtered, washed with water and dried to give the compound 1.2 (2.0 g, 84% yield) as an off-white solid.

b) Compound 1.3

A solution of N-[4-(tert-butyl)-2-chlorophenyl]acetamide 1.2 (2.00 g, 8.86 mmol) in a mixture of 36 N H.sub.2SO.sub.4 (14 mL) and water (2.9 mL) was heated at 120.degree. C. for 18 h. After cooling the reaction mixture was poured over ice, aqueous NaOH solution (10 M) was added until the pH was alkaline and the mixture was extracted with EtOAc. The organic phase was washed with brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The resulting oil 1.3 (767 mg, 40% yield) was used as such in the next step.

c) Compound 1.4

To a solution of compound 1.3 (765 mg, 4.16 mmol) in CH.sub.2Cl.sub.2 (5 mL) was added di-2-pyridylthiocarbonate (966 mg, 4.16 mmol). The solution was stirred at room temperature overnight. The reaction mixture was washed successively with saturated aqueous NaHCO.sub.3 solution and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to give compound 1.4 (930 mg, 99% yield).

d) Compound 1.5

To a solution of compound 1.4 (925 mg, 4.10 mmol) in EtOH (200 mL) was added NaN.sub.3 (4.3 g, 66 mmol) and the mixture was heated to 70.degree. C. After 2 h the reaction mixture was cooled to room temperature and 12 N HCl (2 mL) was added. The mixture was concentrated and diluted with EtOAc. The organic layer was extracted with aqueous 1 N NaOH solution. The aqueous layer was acidified with aqueous 6 N HCl solution and a white precipitate formed. The suspension was filtered and the resulting solid was triturated with Et.sub.2O/hexane (1/1) to give compound 1.5 (941 mg, 85% yield) as an off white solid.

e) Compound 1.6

To a solution of pyridine (0.34 mL, 4.20 mmol) and compound 1.5 (930 mg, 3.46 mmol) in DMSO (25 mL) was added ethyl 2-bromoacetate (392 .mu.L, 3.46 mmol). The resulting light yellow solution was stirred at room temperature for 2 h. The reaction mixture was then diluted with EtOAc and was successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude ester was dissolved in THF (30 mL) and MeOH (10 mL) and aqueous 1 N NaOH solution (3 mL, 3 mmol) was added. The solution was stirred at 55.degree. C. for 60 min. The THF/MeOH was evaporated under reduced pressure and the residue was dissolved in aqueous 1 N NaOH solution. The solution was slowly acidified to pH 2 at 0.degree. C. with aqueous 1 N HCl solution. The suspension was filtered and the resulting solid was rinsed with water and dried under reduced pressure to give compound 1.6 (600 mg, 99% yield) as a white solid.

f) Compound 1.7

A solution of 4-bromo-2-chloroaniline (4.00 g, 19.37 mmol), bis(pinacolato)diboron (5.90 g, 23.2 mmol) and KOAc (12.3 g, 58.1 mmol) in DMSO (100 mL) was deoxygenated by bubbling nitrogen through it for 45 min. PdCl.sub.2(dppf) (1.42 g, 1.94 mmol) and dppf (1.07 g, 1.94 mmol) were then added and the mixture was heated at 100.degree. C. for 4 h. After cooling to room temperature the reaction mixture was diluted with EtOAc, washed successively with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified twice by flash chromatography using CH.sub.2Cl.sub.2 to give intermediate 1.7 (2.15 g, 44% yield) as a white solid.

g) Compound 1.8

To a solution of methyl (4-bromophenyl)acetate (obtained from the corresponding acid (267.5 mg, 1.2 mmol) upon treatment with excess diazomethane) in 1,4-dioxane (5 mL) were added intermediate 1.7 (315 mg, 1.20 mmol) and K.sub.3PO.sub.4 (792 mg, 3.73 mmol). After degassing the reaction mixture for 45 min, PdCl.sub.2(dppf) (137 mg, 0.19 mmol) and dppf (136 mg, 0.06 mmol) were added and the mixture was heated at 100.degree. C. for 3 h. After cooling to room temperature the reaction mixture was diluted with EtOAc, washed successively with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography using hexane/EtOAc (80/20) to give compound 1.8 (164 mg, 48% yield)

h) Compound 2015

To an ice-cold solution of acid 1.6 (30.6 mg, 0.09 mmol) and aniline 1.8 (25.8 mg, 0.09 mmol) in pyridine (3 mL) was added PCl.sub.3 (8.3 .mu.L). The mixture was stirred at 0.degree. C. for 2 h, quenched with a few drops of water, and concentrated under reduced pressure. The crude product was dissolved in EtOAc and the resulting solution was successively washed with aqueous 10% citric acid solution, water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography using hexane/EtOAc (75/25) to afford the corresponding ester (20 mg, 37% yield) as a white solid.

To a solution of the ester (20 mg, 0.034 mmol) in THF (3 mL)/MeOH (1 mL) was added 1 N NaOH (70 .mu.L, 0.070 mmol). After 1 h at 55.degree. C., the reaction was concentrated and the crude acid was purified by RP-HPLC The pure fractions were combined and concentrated to give compound 2015 (6.5 mg, 33% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 12.35 (bs s, 1H); 10.03 (s, 1H); 7.83-7.79 (m, 3H); 7.73-7.63 (m, 5H); 7.36-7.34 (m, 2H); 4.47 (s, 2H); 3.62 (s, 2H); 1.36 (s, 9H).

Example 2

(Entry 2033) (Bl 211695)

##STR00152## a) Compound 2.1

To a solution of 4-iodo-2-chloroaniline (5.00 g, 19.7 mmol) in THF (40 mL) was added dropwise NaHMDS (1 M in THF, 41.4 mL) and the mixture was stirred at room temperature for 90 min. Boc.sub.2O (4.10 g, 19.0 mmol) in THF (30 mL) was added to the reaction mixture and the resulting solution was stirred overnight. The reaction mixture was diluted with water and extracted twice with EtOAc. The combined organic phase was successively washed with aqueous 1 N HCl, water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography using hexane/EtOAc (99/1 to 4:1) to give compound 2.1 as a light yellow oil (5.5 g, 79% yield).

b) Compound 2.2

To a solution of cyclopropylbromide (6.97 mL, 87.0 mmol) in THF (90 mL) cooled to -78.degree. C. was added nBuLi (2.5 M in hexane, 34 mL) over 45 min. After 1 h, a solution of ZnBr.sub.2 (flame dried under high vacuum, 23.2 g, 103 mmol) in THF (90 mL) was added by cannula and the mixture was allowed to warm to room temperature. After 1 h a solution of compound 2.1 dissolved in THF (90 mL) was added followed by Pd(PPh.sub.3).sub.4 (2.15 g, 1.86 mmol) under stream of nitrogen. The reaction mixture was then heated at reflux for 1 h, cooled in an ice bath and quenched with a mixture of aqueous 1 N HCl solution and aqueous 5% Na.sub.2S.sub.2O.sub.3 solution. The resulting mixture was extracted with Et.sub.2O several times and the combined organic layers were successively washed with aqueous 1 N HCl solution, water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was dissolved in hexane (100 mL) and filtered through a silica gel pad. The filtrate was concentrated to yield compound 2.2 (6.74 g, 87% yield) as a clear oil.

c) Compound 2.3

A solution of compound 2.2 (1.27 g, 4.74 mmol) in anhydrous HCl in dioxane (4 N, 20 mL) was heated at 45.degree. C. for 30 min. The resulting suspension was concentrated to dryness and the viscous oil was partitioned between EtOAc and water. The aqueous layer was made alkaline using aqueous 1 N NaOH solution, and extracted with EtOAc. The organic phase was washed with brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to give aniline 2.3 (511.0 mg, 64% yield) as a beige oil.

d) Compound 2.4

Following the procedure described in Example 1, Steps c and d, compound 2.4 was obtained in 53% yield.

e) Compound 2.5

Following the procedure described in Example 1 Step g, but using the corresponding ethyl ester, aniline 2.5 was obtained as an orange solid in 35% yield.

f) Compound 2.6

To a mixture of aniline 2.5 (202 mg, 0.70 mmol) and Et.sub.3N (110 .mu.L, 0.79 mmol) in CH.sub.2Cl.sub.2 (8 mL) was added bromoacetyl chloride (65 .mu.L, 0.75 mmol). After 18 h the reaction mixture was diluted with EtOAc, washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography using hexane/EtOAc (75/25) to give compound 2.6 (247 mg, 86% yield) as a brown solid.

g) Compound 2033

To a solution of compound 2.4 (39.0 mg, 0.15 mmol) in DMF (2 mL) was added compound 2.6 (62.0 mg, 0.15 mmol) and K.sub.2CO.sub.3 (25 mg, 0.18 mmol). After 2 h, aqueous 1 N NaOH solution (0.5 mL) was added and stirring was continued for 2 h. The reaction mixture was quenched with TFA (0.5 mL), The resulting crude acid was purified by HPLC using a gradient of MeCN/H.sub.2O containing TFA (0.06%) (CombiPrep ODS-AQ 50.times.20 mm, 5 .mu., 120A). The pure fractions were combined and concentrated to give compound 2033 (42 mg, 51% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6) .delta. 12.34 (br s, 1H); 10.02 (s, 1H); 7.81 (d, J=8.6 Hz, 1H); 7.79, (d, 2.0 Hz, 1H); 7.66-7.61 (m, 4H); 7.56 (d, J=2.2 Hz, 1H, 7.37-7.31 (m, 3H); 4.46 (s, 2H); 3.61 (s, 2H); 2.14-2.05 (m, 1H); 1.11-1.05 (m, 2H); 0.89-0.84 (m, 2H).

Example 3

General Procedure for the Chlorination of Anilines

##STR00153##

A solution of 3-methyl-5-(trifluoromethyl)aniline (2.0 g, 11.4 mmol) and N-chlorosuccinimide (1.7 g, 12.7 mmol) in MeCN (15 mL) was heated for 6 h. Upon cooling the reaction was concentrated to dryness and the resulting mixture was purified by flash chromatography using hexane/EtOAc (95/5) to give compound 3.1 (587.8 mg, 25% yield) as a clear oil, followed by hexane/EtOAc (90/10) to obtain compound 3.2 (611.9 mg, 26% yield) as a colorless oil.

Example 4

(Entry 4067) (Bl211905)

##STR00154## a) Compound 4.3

To a solution of aniline 4.1 (706.2 mg, 2.78 mmol) in THF (27 mL) was added cuprous iodide (55.8 mg, 0.29 mmol), Et.sub.2NH (2.37 mL, 22.9 mmol) and compound 4.2 (370 mg, 2.93 mmol). The mixture was degassed for 15 min by bubbling argon through the solution. Pd(PPh.sub.3).sub.4 (339 mg, 0.29 mmol) was added and the reaction mixture was heated at reflux until total disappearance of the starting material as indicated by TLC. The black solution was cooled to room temperature, silica gel was added and all volatiles were removed under reduced pressure to give a dry powder which was applied at the top of a column. The crude compound was purified by flash chromatography (hexane/EtOAc, 75/25) to afford compound 4.3 (600 mg, 86% yield) as a brown oil.

b) Compound 4.4

LiAlH.sub.4 (33.2 mg, 0.87 mmol) was added to an ice-cold THF/Et.sub.2O (1:2) solution of compound 4.3. The reaction mixture was stirred at room temperature for 1 h then was poured over aqueous 1 N Rochelle salt/Et.sub.2O (200 mL, 1:1). The organic phase was collected and the aqueous phase was extracted with Et.sub.2O (3.times.40 mL). The combined organic phases were washed with brine (50 mL), dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure to afford the alcohol 4.4 (77.0 mg, 79% yield) as a colorless oil which was used as such in the following step.

c) Compound 4067

Oxalyl chloride (40 .mu.L, 45 .mu.mol) and DMF (one drop) were successively added to an ice-cold solution of acid 4.5 (prepared from compound 2.4 using a procedure analogous to that described in Example 1 step e) (135 mg, 0.41 mmol) in CH.sub.2Cl.sub.2 (4 mL). The reaction mixture was stirred at room temperature for 1 h then was concentrated under reduced pressure. The residue was dissolved in THF (5 mL) and cooled to 0.degree. C. A solution of amine 4.4 (77.0 mg, 0.34 mmol) in THF (1 mL) and pyridine (70 .mu.L, 0.86 mmol) were successively added to the solution. The reaction mixture was stirred at room temperature for 2 h, diluted with saturated aqueous NaHCO.sub.3 solution and extracted with Et.sub.2O (3.times.50 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography (hexane/EtOAc, 4/1) to afford the pure amide 4067 (60.0 mg, 27% yield) as a colorless oil. .sup.1H-NMR (DMSO-d.sub.6): .delta. 10.04 (s, 1H), 7.81 (d, J=8.6 Hz, 1H), 7.67 (d, J=8.6 Hz, 1H), 7.60 (d, J=1.8 Hz, 1H), 7.54 (d, J=1.8 Hz, 1H), 7.37 (dd, J=4.1, 2 Hz, 1H), 7.35 (dd, J=4.1, 2 Hz, 1H), 4.49 (s, 2H), 3.65 (broad s, 1H), 2.16-2.12 (m, 1H), 1.23 (s, 6H), 1.15-1.11 (m, 2H), 0.93-0.89 (m, 2H).

Example 5

(Entry 4177) (Bl212190)

##STR00155## a) Compound 4177

To an ice-cold solution of alcohol 4067 (200 mg, 0.39 mmol) in CH.sub.2Cl.sub.2 (4 mL) was added Dess-Martin periodinane (328 mg, 0.77 mmol). The reaction mixture was stirred at room temperature for 30 min then diluted with saturated aqueous Na.sub.2S.sub.2O.sub.3 solution (50 mL) and extracted with Et.sub.2O (3.times.50 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in EtOH (5 mL) and added to a solution of glycine methyl ester (72.9 mg, 0.58 mmol) and acetic acid (0.2 mL) in EtOH (5 mL) at room temperature. NaCNBH.sub.3 (36.5 mg, 0.58 mmol) was then added and the resulting suspension was stirred at room temperature for 1 h. The reaction mixture was diluted with saturated aqueous NaHCO.sub.3 solution (30 mL) and extracted with Et.sub.2O (3.times.30 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in DMSO (4 mL), cooled to 0.degree. C. and aqueous 1 N LiOH solution (0.39 mL, 0.39 mmol) was added. The resulting mixture was stirred at room temperature for 30 min, diluted with TFA (0.5 mL) and purified by RP-HPLC to afford, after lyophilization, compound 4177 (38.0 mg, 14% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 10.09 (s, 1H), 8.91 (broad s, 1H), 7.88 (d, J=8.6 Hz, 1H), 7.67 (dd, J=4.5, 2.7 Hz, 2H), 7.60 (d, J=1.8 Hz, 1H), 7.45 (dd, J=8.4, 1.6 Hz, 1H), 7.37 (dd, J=8.4, 1.7 Hz, 1H), 4.50 (s, 2H), 4.01 (s, 2H), 3.66 (broad s, 2H), 3.18 (s, 2H), 2.17-2.11 (m, 1H), 1.41 (s, 6H), 1.16-1.11 (m, 2H), 0.93-0.89 (m, 2H)

Example 6

(Entry 4181) (Bl212194)

##STR00156## a) Compound 6.1

Dess-Martin periodinane (196 mg, 0.46 mmol) was added to an ice-cold solution of compound 4067 (217 mg, 0.42 mmol) in CH.sub.2Cl.sub.2 (4 mL). The resulting mixture was stirred at room temperature for 1 h, diluted with saturated aqueous Na.sub.2S.sub.2O.sub.3 solution and extracted with Et.sub.2O (3.times.30 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in dry THF (2 mL) and transferred into an ice-cold solution of potassium tert-butoxide (182 mg, 1.62 mmol) and (methoxymethyl)triphenylphosphonium chloride (579 mg, 1.69 mmol) in THF (5 mL), which was previously stirred for 30 min. The resulting reaction mixture was stirred for 1 h at 0.degree. C. then for 1 h at room temperature. Saturated aqueous NaHCO.sub.3 solution (20 mL) was added and the mixture was extracted with Et.sub.2O (3.times.30 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. Purification by flash chromatography using hexane/EtOAc (7/3) afforded compound 6.1 (80.0 mg, 35% yield) as a colorless oil.

b) Compound 4181

Aqueous 10% HCl solution (3 mL) was added to an ice-cold solution of compound 6.1 (79.7 mg, 0.15 mmol) in THF (2 mL). The reaction mixture was stirred for 30 min at 0.degree. C., for 3 h at room temperature then extracted with Et.sub.2O (3.times.30 mL). The combined organic phases were washed with saturated aqueous NaHCO.sub.3 solution, brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in tBuOH/CH.sub.2Cl.sub.2 (3 mL, 3:1). Aqueous pH 7.0 potassium phosphate buffer (3 mL) was added, followed by 2-methyl-2-butene (5 mL) and NaClO.sub.2 (66.5 mg, 0.74 mmol). The reaction mixture was stirred for 3 h at room temperature, diluted with aqueous 10% HCl solution (10 mL) and extracted with CH.sub.2Cl.sub.2 (5.times.10 mL). The combined organic phases were dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by RP-HPLC to afford, after lyophilization, compound 4181 (44.0 mg, 55% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6) .delta. 12.1 (s, 1H), 9.94 (s, 1H), 7.71 (d, J=8.4 Hz, 1H), 7.57 (d, J=8.2 Hz, 1H), 7.50 (d, J=1.5 Hz, 1H), 7.38 (d, J=1.7 Hz, 1H), 7.28-7.21 m, 2H), 7.23 (dd, 1H), 4.38 (s, 2H), 2.06-2.01 (m, 1H), 1.30 (s, 6H), 1.05-1.01 (m, 2H), 0.83-0.80 (m, 2H).

Example 7

(Entry 4012) (Bl211683)

##STR00157## a) Compound 7.1

To a solution of aniline 4.1 (500 mg, 1.97 mmol) was added propargyl bromide (258 .mu.L, 2.17 mmol), cuprous iodide (37.5 mg, 197 .mu.mol) and pyrrolidine (0.82 mL, 9.82 mmol). The mixture was degassed by bubbling argon in the solution for 20 min. Pd(PPh.sub.3).sub.4 (228 mg, 0.20 mmol) was added and the mixture was heated at reflux for 5 h. The reaction mixture was cooled to room temperature, silica gel was added and the volatiles were removed under reduced pressure to afford a dry powder. The crude compound was purified by flash chromatography using hexane/EtOAC/Et.sub.3N (50/45/5) to afford compound 7.1 (281 mg, 61% yield) as a brown oil.

b) Compound 4012

Using a method similar to the one described in Example 1, Step h, but using aniline 7.1 in place of aniline 1.8, compound 4012 was obtained as a colorless oil (42% yield). .sup.1H-NMR (DMSO-d.sub.6): 10.03 (s, 1H), 7.82-7.78 (m, 2H), 7.72-7.66 (m, 2H), 7.57 (s, 2H), 7.39 (d, J=7.5 Hz, 1H), 4.46 (s, 2H), 3.60 (s, 2H), 2.51 (s, 4H), 1.72 (s, 4H), 1.36 (s, 9H).

Example 8

(Entries 4069, 4072, 4130) (Bl211910, Bl211934, Bl212088)

##STR00158## a) Compound 8.1

Using a method similar to the one described in Example 4, Step a, but replacing alkyne 4.2 with 3-amino-3-methyl-1-butyne, compound 8.1 was obtained as a brown oil (98% yield).

b) Compound 8.2

Boc.sub.2O (7.29 g, 33.4 mmol) was added to a solution of the propargylamine 8.1 (6.97 g, 33.4 mmol) in MeOH (100 mL) at room temperature. The resulting mixture was stirred at room temperature for 2 h, diluted with saturated aqueous NaHCO.sub.3 solution (100 mL) and extracted with EtOAc (3.times.50 mL). The combined organic phases were washed with saturated aqueous NaHCO.sub.3 solution and brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography (hexane/EtOAc, 7/3) to afford the aniline 8.2 (5.64 g, 55% yield) as a colorless oil.

c) Compound 4069

Using a method similar to the one described in Example 4, Step c, aniline 8.2 (497 mg, 1.61 mmol) yielded compound 4069 (717 mg, 74% yield) as an off white solid.

.sup.1H-NMR (DMSO-d.sub.6): .delta. 10.04 (s, 1H), 7.80 (d, J=8.4 Hz, 1H), 7.65 (d, J=8.3 Hz, 1H), 7.57 (d, J=1.8 Hz, 1H), 7.47 (d, J=1.8 Hz, 1H), 7.34 (dd, J=8.2, 1.8 Hz, 1H), 7.32 (dd, J=8.5, 1.7 Hz, 1H), 7.13 (broad s 1H), 4.46 (s, 2H), 2.13-2.07 (m, 1H), 1.52 (s, 6H), 1.41 (s, 9H), 1.11-1.09 (m, 2H), 0.90-0.86 (m, 2H).

d) Compound 4072

Anhydrous 4 N HCl in 1,4-dioxane (0.23 mL, 0.93 mmol) was added at room temperature to a solution of compound 4069 (56.0 mg, 93 .mu.mol) in 1,4-dioxane (0.5 mL). The reaction mixture was stirred at room temperature overnight then concentrated under reduced pressure. The crude residue was purified by RP-HPLC to afford, after lyophilization, compound 4072 (33 mg, 70% yield) as a white solid.

.sup.1H-NMR (DMSO-d.sub.6): .delta. 10.08 (s, 1H), 8.52 (broad s, 3H), 7.91 (d, J=8.4 Hz, 1H), 7.63 (d, J=8.4 Hz, 1H), 7.61 (d, J=5.6 Hz, 1H), 7.56 (d, J=1.86 Hz, 1H), 7.43 (dd, J=8.4, 1.6 Hz, 1H), 7.33 (dd, J=8.4, 2.0 Hz, 1H), 4.47 (s, 2H), 2.12-2.07 (m, 1H), 1.62 (s, 6H), 1.12-1.07 (m, 2H), 0.89-0.85 (m, 2H).

e) Compound 4130

Acetic acid (30 .mu.L) was added to a solution of aniline 4071 in EtOH (2 mL) at room temperature. Salicylaldehyde (18.3 mg, 0.15 mmol) was then added, followed by NaCNBH.sub.3 (5 .mu.g, 75 .mu.mol). The reaction was stirred at room temperature for 1 h then concentrated under reduced pressure. The crude residue was purified by RP-HPLC to afford, after lyophilization, compound 4130 (18.8 mg, 62% yield) as a white solid.

.sup.1H-NMR (DMSO-d.sub.6): .delta. 10.26 (s, 1H), 10.14 (s, 1H), 9.17 (broad s, 2H), 7.95 (d, J=8.4 Hz, 1H), 7.75 (d, J=1.8 Hz, 1H), 7.67 (d, J=8.2 Hz, 1H), 7.60 (d, J=1.8 Hz, 1H), 7.54 (dd, J=8.6, 1.8 Hz, 1H), 7.40 (d, J=7.6 Hz, 1H), 7.38 (dd, J=8.4, 1.7 Hz, 1H), 7.31 (dt, J=8.2, 1.3 Hz, 1H), 6.97 (d, J=8.1 Hz, 1H), 6.91 (t, J=7.2 Hz, 1H), 4.51 (s, 2H), 4.33 (s, 2H), 2.17-2.11 (m, 1H), 1.76 (s, 6H), 1.16-1.11 (m, 2H), 0.93-0.89 (m, 2H).

Example 9

(Entry 4062) (Bl211874)

##STR00159## a) Compound 9.2

Cyclobutanone (1.00 g, 14.3 mmol) was added to a -78.degree. C. solution of ethynyl magnesium bromide (0.5M in THF, 40 mL, 20 mmol). The reaction mixture was stirred at room temperature for 1 h, diluted with saturated aqueous NH.sub.4Cl solution and extracted with Et.sub.2O (4.times.30 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in THF (25 mL) and 2-chloro-4-iodoaniline (1.25 g, 4.93 mmol) was added, followed by cuprous iodide (94 mg, 190 mmol) and Et.sub.2NH (1.3 mL, 12 mmol). The mixture was degassed by bubbling argon through the solution for 15 min and Pd(PPh.sub.3).sub.4 (570 mg, 0.49 mmol) was added. The solution was heated at reflux for 5 h. After cooling to room temperature, silica gel was added and the volatiles were removed under reduced pressure to give a dry brown powder. The crude product was purified by flash chromatography (hexane/EtOAc, 19/1) to afford compound 9.2 (269 mg, 25% yield) as a brown oil.

b) Compound 4062

Using a method similar to the one described in Example 7, Step b, aniline 9.2 (61 mg, 0.28 mmol) gave compound 4062 (10.0 mg, 6% yield) as an off white solid. .sup.1H-NMR (CDCl.sub.3): .delta. 9.39 (s, 1H), 8.31 (d, J=8.6 Hz, 1H), 7.61 (d, J=1.8 Hz, 1H), 7.49-7.47 (m, 2H), 7.36-7.31 (m, 2H), 4.16 (s, 2H), 2.55-2.50 (m, 2H), 2.36-2.30 (m, 2H), 2.23 (s, 1H), 1.91-1.83 (m, 2H), 1.38 (s, 9H).

Example 10

(Entries 4098,4082) (Bl212033, Bl211987)

##STR00160## a) Compound 10.2

LiAlH.sub.4 (446 mg, 11.7 mmol) was added to an ice-cold solution of compound 10.1 (2.00 g, 11.8 mmol) in Et.sub.2O (100 mL). The reaction mixture was stirred at room temperature for 1 h then poured over aqueous 1 N Rochelle salt solution (200 mL). The solution was diluted with Et.sub.2O (200 mL) and stirred vigourously for 1 h. The organic phase was collected, washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was purified by flash chromatography (hexane/EtOAc, 4/1) to afford alcohol 10.2 (963 mg, 64% yield) as a colorless oil. b) Compound 10.3

Using a method similar to the one described in Example 7, Step a, compound 10.2 (400 mg, 2.12 mmol) and 2-chloro-4-iodoaniline (791 mg, 3.12 mmol) gave alcohol 10.3 (585 mg, 74% yield) as a brown oil.

c) Compound 4098

Using a method similar to the one described in Example 4, Step c, aniline 10.3 (131 mg, 0.52 mmol) gave compound 4098 (160 mg, 57% yield) as an off white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 10.04 (s, 1H), 7.83 (d, J=8.6 Hz, 1H), 7.64 (d, J=8.2 Hz, 1H), 7.57 (dd, J=7.2, 1.7 Hz, 2H), 7.39 (dd, J=8.4, 2.0 Hz, 1H), 7.33 (dd, J=8.4, 1.7 Hz, 1H), 4.58 (t, J=5.9 Hz, 1H), 4.46 (s, 2H), 3.58-3.49 (m, 4H), 2.12-2.07 (m, 1H), 1.48 (s, 6H), 1.12-1.07 (m, 2H), 0.89-0.85 (m, 2H).

d) Compound 4082

MsCl (1.2 .mu.L, 15 .mu.mol) was added to an ice cold solution of alcohol 4098 (7.8 mg, 14 .mu.mol) and Et.sub.3N (4 .mu.L, 28 .mu.mol) in CH.sub.2Cl.sub.2 (1 mL). The mixture was stirred at room temperature for 2 h, diluted with saturated aqueous NaHCO.sub.3 solution (20 mL) and extracted with Et.sub.2O (3.times.30 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude mesylate was dissolved in THF (5 mL) and pyrrolidine (0.1 mL) was added. The mixture was heated at reflux overnight, cooled to 0.degree. C., concentrated under reduced pressure and purified by RP-HPLC to afford, after lyophilization, compound 4082 (3.7 mg, 44% yield). .sup.1H-NMR (DMSO-d.sub.6): 610.04 (s, 1H), 9.37 (broad s, 1H), 7.85 (d, J=8.4 Hz, 1H), 7.63 (d, J=8.2 Hz, 1H), 7.62 (s, 1H), 7.56 (d, J=1.8 Hz, 1H), 7.41 (dd, J=8.6, 1.8 Hz, 1H), 7.33 (dd, J=8.2, 1.7 Hz, 1H), 4.46 (s, 2H), 3.85-3.83 (m, 2H), 3.56-3.52 (m, 2H), 3.11-3.07 (m, 2H), 2.12-2.08 (m, 1H), 2.04-1.98 (m, 1H), 1.90-1.86 (m, 2H), 1.54 (s, 6H), 1.12-1.07 (m, 2H), 0.89-0.85 (m, 2H).

Example 11

(Entry 4167) (Bl212174)

##STR00161## a) Compound 11.1

DEAD (424 mg, 2.43 mmol) was added to an ice-cold solution) solution of alcohol 10.2 (from Example 10) (240 mg, 1.87 mmol), 4-hydroxypyridine (196 mg, 2.06 mmol) and PPh.sub.3 (638 mg, 2.43 mmol) in THF (20 mL). The reaction mixture was stirred for 1 h at room temperature. Silica gel was added and the volatiles were removed under reduced pressure to afford a dry powder which was applied on a pad of silica. Quick elution (hexane/EtOAc, 1/1) afforded alkyne 11.1 which was used as such in the following step.

b) Compound 11.2

Using a method similar to the one described in Example 7, Step a, compound 11.1 (88.0 mg, 0.43 mmol) and 2-chloro-4-iodoaniline (108.7 mg, 0.429 mmol) gave compound 11.2 (32.0 mg, 23% yield) as a brown oil.

c) Compound 4167

Using a method similar to the one described in Example 4, Step c, aniline 11.2 (32 mg, 97 .mu.mol) yielded compound 4167 (24 mg, 40% yield) as an off white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 9.99 (s, 1H), 8.65 (d, J=7.0 Hz, 2H), 7.78 (d, J=8.4 Hz, 1H), 7.57 (d, J=8.2 Hz, 1H), 7.51-7.47 (m, 4H), 7.31 (dd, J=8.4, 1.7 Hz, 1H), 7.27 (dd, J=8.3, 1.8 Hz, 1H), 4.46-4.45 (m, 2H), 4.40 (s, 2H), 3.91-3.89 (m, 2H), 2.05-2.00 (m, 1H), 1.44 (s, 6H), 1.05-1.00 (m, 2H), 0.83-0.79 (m, 2H).

Example 12

(Entries 4083,4084) (Bl21989, Bl211999)

##STR00162## a) Compound 12.2

A solution of diethyl ester 12.1 (2.00 g, 10.7 mmol) in THF (15 mL) was slowly added to an ice-cold suspension of LiAlH.sub.4 (1.35 g, 35.4 mmol) in THF (100 mL). The mixture was stirred at room temperature for 1 h then Na.sub.2SO.sub.4.6H.sub.2O was added until no more gas was formed. The reaction mixture was filtered through Celite and concentrated under reduced pressure. The crude diol was dissolved in THF (100 mL), cooled to 0.degree. C. and NaH (258 mg, 10.7 mmol) was added. The resulting suspension was stirred at room temperature for 1 h and tert-butyldiphenylsilyl chloride (2.95 g, 10.7 mmol) was added. The reaction mixture was stirred at room temperature for 1 h, diluted with saturated aqueous NH.sub.4Cl solution (100 mL) and extracted with CH.sub.2Cl.sub.2 (3.times.100 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography (hexane/EtOAc, 4:1) to afford pure silylether 12.2 (1.2 g, 33% yield).

b) Compound 12.3

Dess-Martin periodinane (2.99 g, 7.05 mmol) was added to an ice-cold solution of compound 12.2 (2.40 g, 7.05 mmol) in CH.sub.2Cl.sub.2 (50 mL). The reaction mixture was stirred at room temperature for 1 h, diluted with saturated aqueous Na.sub.2S.sub.2O.sub.3 solution (20 mL) and saturated aqueous NaHCO.sub.3 solution (20 mL) then extracted with Et.sub.2O (3.times.20 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude aldehyde was dissolved in CH.sub.2Cl.sub.2 (5 mL) and transferred into an ice-cold solution of PPh.sub.3 (7.39 g, 7.05 mmol) and CBr.sub.4 (4.67 g, 14.1 mmol) in CH.sub.2Cl.sub.2 (20 mL) that was previously stirred for 1 h at room temperature The resulting reaction mixture was stirred for 10 min at 0.degree. C. and silica gel was added. The volatiles were removed under reduced pressure to afford a dry powder. The crude compound was purified by flash chromatography (hexane to hexane/EtOAc, 98:2) to afford the geminal dibromoalkene. To a cold (-78.degree. C.) solution of this intermediate in THF (15 mL) was added n-BuLi solution (2 M in hexane, 5.6 mL). The reaction mixture was stirred for 1.5 h at -78.degree. C., for 1 h at room temperature, then diluted with water (5 mL) and extracted with Et.sub.2O (3.times.50 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude residue was purified by flash chromatography (100% hexane then 2% EtOAc/98% hexane) to afford the alkynyl-silyl ether, which was diluted in THF (10 mL) and treated with TBAF (1 M in THF, 8.46 mL, 8.46 mmol). The reaction mixture was stirred for 15 min at room temperature and concentrated under reduced pressure. The residue was purified by flash chromatography (hexane/EtOAc, 4/1) to afford compound 12.3 (240 mg, 35% yield, 4 steps).

c) Compound 12.4

Using a method similar to the one described in Example 7, Step a, compound 12.3 (240 mg, 2.50 mmol) and 2-chloro-4-iodoaniline (633 mg, 2.50 mmol) gave aniline 12.4 (370 mg, 67% yield) as a brown oil.

d) Compound 4083

Using a method similar to the one described in Example 4, Step c, aniline 12.4 (36.0 mg, 0.16 mmol) yielded compound 4083 (10 mg, 12% yield) as an off white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 10.14 (s, 1H), 7.91 (d, J=8.6 Hz, 1H), 7.78 (d, J=8.2 Hz, 1H), 7.71 (d, J=1.7 Hz, 1H), 7.65 (d, J=1.7 Hz, 1H), 7.49-7.47 (m, 2H), 4.59 (s, 2H), 3.57 (s, 2H), 2.28-2.22 (m, 1H), 1.27-1.22 (m, 2H), 1.06-1.01 (m, 6H).

e) Compound 4084

Dess-Martin periodinane (16.9 mg, 40.0 .mu.mol) was added to an ice-cold solution of compound 4083 (32.0 mg, 40.0 .mu.mol) in CH.sub.2Cl.sub.2 (5 mL). The reaction mixture was stirred at room temperature for 1 h, diluted with saturated aqueous Na.sub.2S.sub.2O.sub.3 solution and extracted with Et.sub.2O (3.times.20 mL). The combined organic phases were washed with brine, dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude oil was dissolved in t-BuOH/CH.sub.2Cl.sub.2 (3 mL, 3:1). Aqueous pH 7.0 potassium phosphate buffer (3 mL) was added, followed by 2-methyl-2-butene (5 mL) and NaClO.sub.2 (18 mg, 0.2 mmol). The reaction mixture was stirred for 3 h at room temperature, diluted with aqueous 10% HCl solution (10 mL) and extracted with CH.sub.2Cl.sub.2 (5.times.10 mL). The combined organic phases were dried (Na.sub.2SO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by RP-HPLC to afford, after lyophilization, the acid 4084 (2.1 mg, 10% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 12.77 (s, 1H), 9,91 (s, 1H), 7.70 (d, J=8.6 Hz, 1H), 7.54 (d, J=8.3 Hz, 1H), 7.47 (d, J=1.8 Hz, 1H), 7.44 (d, J=1.8 Hz, 1H), 7.27 (dd, J=8.4, 1.8 Hz, 1H), 7.24 (dd, J=8.4, 1.7 Hz, 1H), 4.36 (s, 2H), 2.04-1.98 (m, 1H), 1.43-1.40 (m, 2H), 1.31-1.28 (m, 2H), 1.03-0.98 (m, 2H), 0.80-0.76 (m, 2H).

Example 13

(Entry 4094) (Bl212026)

##STR00163## a) Compound 4094

Using a method analogous to the one described in Example 10, Step d, alcohol 4084 (26 mg, 0.05 mmol), afforded compound 4094 (13 mg, 43% yield) as a white solid. .sup.1H-NMR (DMSO-d.sub.6): .delta. 9.95 (s, 1H), 9.22 (broad s, 1H), 7.70 (d, J=8.2 Hz, 1H), 7.56 (d, J=8.4 Hz, 1H), 7.49 (d, J=1.8 Hz, 1H), 7.43-7.41 (m, 1H), 7.28-7.24 (m, 2H), 4.38 (s, 2H), 3.40 (s, 2H), 3.30-2.94 (m, 8H), 2.72 (s, 3H), 2.05-2.00 (m, 1H), 1.05-1.00 (m, 2H), 0.98 (s(br), 2H), 0.82-0.78 (m, 4H).

Example 14

(Entry 1002) (Bl 211469)

##STR00164## a) Compound 14.1

To a solution of 2-chloro-4-methylacetophenone (3.45 g, 20.4 mmol) in 1,4-dioxane (20 mL) was added at room temperature a solution of Br.sub.2 (1.16 mL, 22.4 mmol) in 1,4-dioxane (50 mL) over a period of 1 h. The reaction mixture was stirred at room temperature for 20 min. The 1,4-dioxane was evaporated under reduced pressure and the residue was dissolved in Et.sub.2O (100 mL). The resulting solution was successively washed with aqueous saturated NaHCO.sub.3, water, and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:hexane, 7:3) to yield compound 14.1 (3.7 g, 73% yield) as a yellow oil.

b) Compound 14.2

Methyl thioglycolate (379 .mu.L, 4.24 mmol) was added to a solution of compound 14.1 (1.00 g, 4.04 mmol) and Et.sub.3N (619 .mu.L, 4.44 mmol) in CH.sub.2Cl.sub.2. The reaction mixture was stirred at room temperature for 1 h. The mixture was then diluted with CH.sub.2Cl.sub.2 (100 mL), washed successively with aqueous 0.1 N HCl solution, aqueous saturated NaHCO.sub.3, water and brine. The organic layer was dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 14.2 (1.1 g, 100% yield) as a pale yellow solid.

c) Compound 14.3

To a solution of compound 14.2 (1.07 g, 3.93 mmol) in AcOH (30 mL) was added at room temperature a solution of bromine (202 .mu.L, 3.93 mmol) in AcOH (10 mL) over a period of 30 min. The reaction mixture was stirred at room temperature for 30 min and poured in ether (200 mL). The organic phase was successively washed with water, aqueous saturated NaHCO.sub.3, water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2) to afford compound 14.3 (1.23 g, 89% yield) as a clear oil.

d) Compound 14.4

Thioformamide (521.3 mg, 8.53 mmol) was added to a solution of compound 14.3 (300.0 mg, 853.1 .mu.mol) in iPrOH (20 mL). The reaction mixture was stirred at 60.degree. C. for 1 h then was concentrated under reduced pressure. The residue was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 14.4 (207 mg, 78% yield) as a yellow oil.

e) Compound 14.5

Ester 14.4 (207 mg, 660.9 .mu.mol) was dissolved in DMSO (6.0 mL) and aqueous 1 N NaOH (2.0 mL, 2.0 mmol) solution was added to the solution. The reaction mixture was stirred at room temperature for 1 h and acidified (pH=2) with TFA. The mixture was then diluted with EtOAc (100 mL) and successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under vacuum to give compound 14.5 (194 mg, 98% yield).

f) Compound 1002

PCl.sub.3 (10.2 .mu.L, 116 .mu.mol) was added to an ice-cold solution of compound 14.5 (35.0 mg, 116 .mu.mol) and compound 2.5 (from Example 2) (35.4 mg, 128. .mu.mol) in pyridine (3.0 mL). The reaction mixture was stirred at room temperature for 30 min. Water (few drops) was added and the mixture was concentrated under reduced pressure. The crude ester was dissolved in DMSO (3.0 mL) and aqueous 1 N NaOH (1.0 mL, 1.0 mmol) solution was added to the solution. The reaction mixture was stirred at room temperature for 1 h and acidified (pH=2) with TFA. The solution was purified by RP-HPLC and the pure fractions were concentrated to give compound 1002 (6.2 mg, 10% yield) as an orange solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.27 (broad s, 1H), 9.65 (s, 1H), 9.22 (s, 1H), 7.83 (d, J=8.4 Hz, 1H), 7.77 (d, J=1.6 Hz, 1H), 7.65-7.63 (m, 3H), 7.38-7.30 (m, 4H), 7.16 (d, J=7.7 Hz, 1H), 3.76 (s, 2H), 3.61 (s, 2H), 2,34 (s, 3H).

Example 15

(Entry 1003) (Bl 211531)

##STR00165## a) Compound 15.2

A mixture of compound 15.1 (400 mg, 2.07 mmol) and methyl 3,3-dimethoxypropionate (323 .mu.L, 2.28 mmol) in MeOH (5.0 mL) was stirred at 70.degree. C. for 24 h. The reaction mixture was concentrated under reduced pressure and the residue purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 15.2 (104 mg, 24% yield) as a yellow solid.

b) Compound 15.3

To a solution of compound 15.2 (39.4 mg, 188.8 .mu.mol) and tert-butyl bromoacetate (30.7 .mu.L, 207.7 .mu.mol) in DMF (3.0 mL) at room temperature was added potassium carbonate (39.1 mg, 283.3 .mu.mol). The reaction mixture was stirred at room temperature for 16 h, then was diluted with EtOAc (50 mL) and successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 15.3 (21.4 mg, 35% yield) as a yellow oil.

c) Compound 1003

TFA (1.00 mL, 13.0 mmol) was added dropwise to a solution of compound 15.3 (13.2 mg, 41.0 .mu.mol) in CH.sub.2Cl.sub.2 (2.0 mL) at room temperature. The reaction mixture was stirred for 16 h and then concentrated under vacuum. PCl.sub.3 (10.2 .mu.L, 116.7 .mu.mol) was then added to an ice-cold solution of the resulting acid and compound 2.5 (Example 2) (11.3 mg, 41.0 .mu.mol) in pyridine (3.0 mL). The reaction mixture was stirred at room temperature for 30 min. Water (few drops) was added and the mixture was concentrated under reduced pressure. The crude ester was dissolved in DMSO (2.0 mL) and aqueous 1 N NaOH (1.0 mL, 1.0 mmol) solution was added to the solution. The reaction mixture was stirred at room temperature for 1 h and acidified (pH=2) with TFA. The solution was purified by RP-HPLC and the pure fractions were concentrated to give compound 1003 (7.6 mg, 36% yield) as an orange solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.36 (broad s, 1H), 9.36 (s, 1H), 8.00 (d, J=8.4 Hz, 1H), 7.79 (d, J=2.2 Hz, 1H), 7.66 (d, J=1.9 Hz, 1H), 7.63 (d, J=8.2 Hz, 2H), 7.52 (d, J=2.0 Hz, 1H), 7.50 (s, 1H), 7.44 (d, J=8.0 Hz, 1H), 7.34 (d, J=8.2 Hz, 2H), 7.31 (d, J=8.2 Hz, 1H), 4.88 (s, 2H), 3.60 (s, 2H), 2.39 (s, 3H).

Example 16

(Entry 1004) (Bl 211546)

##STR00166## a) Compound 16.1

A mixture of compound 15.2 (250 mg, 1.20 mmol) and Lawesson's reagent (485 mg, 1.20 mmol) in toluene (15 mL) was heated under reflux for 4 h. The reaction mixture was then concentrated under reduced pressure and the residue purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 16.1 (86 mg, 32% yield) as a yellow oil.

b) Compound 16.2

To a solution of 16.1 (86.1 mg, 383 .mu.mol) in DMF,(5.0 mL) at 0.degree. C. was added K.sub.2CO.sub.3 (105.9 mg, 766.3 .mu.mol). After stirring for 30 min, tert-butyl bromoacetate (62.2 .mu.L, 421 .mu.mol) was added and the reaction mixture was stirred at 0.degree. C. for 1 h and then allowed to warm to room temperature and stirred for 2 h. EtOAc (50 mL) was added and the mixture was washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 16.2 (64.0 mg, 49% yield) as a colorless oil.

c) Compound 16.3

TFA (1.00 mL, 13.0 mmol) was added dropwise to a solution of compound 16.2 (58.4 mg, 172.3 .mu.mol) in CH.sub.2Cl.sub.2 (3.0 mL) at room temperature. The reaction mixture was stirred for 16 h and then concentrated under reduced pressure to afford compound 16.3 (48.7 mg, 100% yield).

d) Compound 1004

PCl.sub.3 (10.2 .mu.L, 116.7 .mu.mol) was added to an ice-cold solution of compound 16.3 (29.0 mg, 102.6 .mu.mol) and compound 2.5 (Example 2) (32.7 mg, 112.8 .mu.mol) in pyridine (3.0 mL). The reaction mixture was stirred at room temperature for 30 min. Water (few drops) was added and the mixture was concentrated under reduced pressure. The crude ester was dissolved in DMSO (3.0 mL) and aqueous 1 N NaOH (1.0 mL, 1.0 mmol) solution was added to the solution. The reaction mixture was stirred at room temperature for 1 h and acidified (pH=2) with TFA. The solution was purified by RP-HPLC and the pure fractions were concentrated to give compound 1004 (15.8 mg, 29% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.37 (broad s, 1H), 9.65 (s, 1H), 7.81 (d, J=8.4 Hz, 1H), 7.77 (d, J=2.0 Hz, 1H), 7.73 (d, J=1.9 Hz, 1H), 7.65-7.62 (m, 3H), 7.50 (s, 1H), 7.38 (d, J=8.1 Hz, 1H), 7.34 (d, J=8.3 Hz, 2H), 7.24 (dd, J=8.0, 1.0 Hz, 1H), 6.66 (d, J=1.7 Hz, 1H), 3.75 (s, 2H), 3.61 (s, 2H), 2.37 (s, 3H).

Example 17

(Entry 1005) (Bl 211584)

##STR00167## a) Compound 17.2

To a cold (-78.degree. C.) solution of (trimethylsilyl)diazomethane (2.0 M in hexane) (6.53 mL, 13.07 mmol) in THF (50 mL) was added dropwise 2.5 M n-BuLi in hexane (5.23 mL, 13.07 mmol). After 20 min, a solution of compound 17.1 (2.0 g, 10.89 mmol) in THF (15 mL) was added dropwise and the reaction mixture was stirred at -78.degree. C. for 1 h. tert-Butyl bromoacetate (1.93 mL, 13.07 mmol) was then added and the mixture was stirred at -78.degree. C. for 30 min and then at 0.degree. C. for another 30 min. The mixture was treated with ice-water (50 mL) and Et.sub.2O (300 mL) was added. The mixture was washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 17.2 (3.7 g, 83% yield) as a yellow oil.

b) Compound 17.3

A mixture of compound 17.2 (1.0 g, 2.43 mmol) and aqueous 10% KOH solution (12.5 mL) in MeOH (25 mL) was heated under reflux for 2 h. The MeOH was removed under reduced pressure and the mixture was neutralized with aqueous 1 N HCl solution. The aqueous phase was then extracted with Et.sub.2O (2.times.10 mL). The combined organic extracts were washed with brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to give compound 17.3 (683 mg, 99% yield) as a yellow solid.

c) Compound 1005

Using a method similar to the one described for Example 16, Step d, compound 17.3 (50.0 mg, 176.2 mmol) gave compound 1005 (42.7 mg, 46% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.36 (broad s, 1H), 9.75 (s, 1H), 8.06 (s, 1H), 7.79-7.77 (m, 2H), 7.65-7.61 (m, 4H), 7.50 (d, J=8.0 Hz, 1H), 7.36-7.32 (m, 3H), 3.87 (s, 2H), 3.61 (s, 2H), 2.41 (s, 3H).

Example 18

(Entry 1007) (Bl 211689)

##STR00168## a) Compound 18.1

A mixture of compound 14.1 (Example 14) (1.00 g, 4.04 mmol), benzotriazole (529.4 mg, 4.44 mmol) and K.sub.2CO.sub.3 (558 mg, 4.04 mmol) in toluene (100 mL) was heated at reflux for 16 h. The cooled reaction mixture was washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 97:3) to afford compound 18.1 (781 mg, 68% yield) as a yellow oil.

b) Compound 18.2

A solution of compound 18.1 (781 mg, 2.73 mmol) and p-toluenesulfonyl hydrazide (509 mg, 2.73 mmol) in benzene (25.0 mL) was heated at reflux for 24 h. The mixture was cooled and concentrated under reduced pressure to give compound 18.2 (1.20 g, 97% yield) as a beige solid.

c) Compound 18.3

A solution of compound 18.2 (1.20 g, 2.65 mmol) in SOCl.sub.2 (25 mL) was stirred at 60.degree. C. for 8 h. The reaction mixture was then concentrated under reduced pressure and the residue purified by flash chromatography (CH.sub.2Cl.sub.2) to afford compound 18.3 (480 mg, 55% yield) as a yellow solid.

d) Compound 18.4

NaH (60% in oil) (33.5 mg, 838 pmol) was added to a solution of compound 18.3 (229 mg, 698 .mu.mol) and methylthioglycolate (74.9 .mu.L, 838 .mu.mol) in DMF (7 mL) at room temperature. The reaction mixture was stirred for 2 h, quenched with aqueous 0.1 N HCl solution (2 mL) and then diluted with EtOAc (50 mL). The solution was successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography (hexane:EtOAc, 8:2) to afford compound 18.4 (162 mg, 74% yield) as a yellow oil.

e) Compound 18.5

Aqueous 1.0 N NaOH solution (800 .mu.L, 800 .mu.mol) was added to a solution of compound 18.4 (162 mg, 514 .mu.mol) in DMF (5.0 mL). The reaction mixture was stirred at room temperature for 30 min. The mixture was then neutralized with aqueous 1.0 N HCl solution (800.0 .mu.L) and diluted with EtOAc (60 mL). The solution was successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to give compound 18.5 (149 mg, 97% yield) as a yellow oil.

f) Compound 1007

To a solution of compound 18.5 (75.0 mg, 249 .mu.mol) in CH.sub.2Cl.sub.2 (5 mL) at room temperature was added (COCl).sub.2 (43.5 .mu.L, 499 .mu.mol) followed by DMF (5 .mu.L). The reaction mixture was stirred for 15 min and was then concentrated under reduced pressure. The resulting acyl chloride was dissolved in THF (3 mL) and a solution of compound 2.5 (Example 2) (82.5 mg, 299 .mu.mol) in THF (2 mL) was added followed by pyridine (60.5 .mu.L, 748 .mu.mol). The reaction mixture was stirred for 10 min and then quenched with a few drops of aqueous 0.1 N HCl solution. The reaction mixture was then concentrated under reduced pressure. The intermediate ester was diluted in DMSO (6 mL) and treated with aqueous 1.0N NaOH solution (1.0 mL, 1.0 mmol). The reaction mixture was stirred for 3 h and then neutralized with TFA. The solution was purified by RP-HPLC and the pure fractions were concentrated to give compound 1007 (32.4 mg, 24% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.34 (broad s, 1H), 10.00 (s, 1H), 7.81-7.79 (m, 2H), 7.66-7.63 (m, 3H), 7.53 (s, 1H), 7.45 (d, J=7.8 Hz, 1H), 7.36-7.32 (m, 3H), 4.21 (s, 2H), 3.61 (s, 2H), 2.40 (s, 3H).

Example 19

(Entry 1008) (Bl 211786)

##STR00169## a) Compound 19.1

To a suspension of MeONa (384 mg, 7.12 mmol) in THF (18 mL) at room temperature was added ethyl formate (574.9 .mu.L, 7.12 mmol) followed by a solution of 2-chloro-4-methylacetophenone (1.00 g, 5.93 mmol) in THF (6.0 mL). The reaction mixture was stirred at room temperature for 16 h, and then aqueous 1.0 N NaOH solution (60 mL) was added. The aqueous phase was washed with Et.sub.2O (2.times.2 mL). These extracts were discarded, and the aqueous phase was acidified with aqueous 1.0 N HCl solution (65 mL). The mixture was then extracted with Et.sub.2O (3.times.40 mL). The combined organic extracts were washed with water and brine, dried (MgSO.sub.4), filtered, and concentrated under reduced pressure to give compound 19.1 (1.11 g, 95% yield) as a yellow oil.

b) Compound 19.2

Hydrazine hydrate (193.2 .mu.L, 6.20 mmol) was added dropwise to a cold (0.degree. C.) solution of compound 19.1 (1.11 g, 5.64 mmol) in ethanol (15.0 mL). The cooling bath was then removed and the reaction mixture was stirred at room temperature for 3 h. The mixture was concentrated under reduced pressure and the residue diluted in CH.sub.2Cl.sub.2 (150 mL). The solution was washed with brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 19.2 (671 mg, 62% yield) as a yellow solid.

c) Compound 19.3

A solution of bromine (198 .mu.L, 3.83 mmol) in CH.sub.2Cl.sub.2 (10 mL) was added dropwise to a solution of compound 19.2 (671 mg, 3.48 mmol) in CH.sub.2Cl.sub.2 (20 mL). The reaction mixture was stirred at room temperature for 1 h. The mixture was diluted with CH.sub.2Cl.sub.2 (60 mL) and the resulting solution was successively washed with water, aqueous saturated NaHCO.sub.3 solution and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 19.3 (382 mg, 40% yield) as a yellow solid.

d) Compound 19.4

NaH (60% in oil) (59.9 mg, 1.50 mmol) was added to a cold (0.degree. C.) solution of compound 19.3 (369.6 mg, 1.36 mmol) in DMF (5 mL). The reaction mixture was stirred at 0.degree. C. for 30 min and then MeI (93.2 .mu.L, 1.50 mmol) was added. The mixture was warmed to room temperature and stirred for 1 h. The reaction mixture was diluted with EtOAc (100 mL) and washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 19.4 (363 mg, 93% yield; 1.6:1 mixture of isomers) as a yellow solid.

e) Compound 19.5

To a cold (-78.degree. C.) solution of compound 19.4 (75.0 mg, 262 .mu.mol) in THF (4 mL) was added 2.5 M n-BuLi in hexane (115.6 .mu.L, 288.9 .mu.mol). After 15 min, a solution of (i-Pr.sub.3SiS).sub.2 (199.0 mg, 525.3 .mu.mol) in THF (1 mL) was added via cannula to the reaction mixture at -78.degree. C. The reaction mixture was stirred for 15 min and then the cooling bath was removed and the solution stirred for 3 h. CH.sub.2Cl.sub.2 (50 mL) was added and the mixture was washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to afford compound 19.5 (46.4 mg, 45% yield).

f) Compound 19.6

TBAF (1.0 M in THF) (294 .mu.L, 294 .mu.mol) was added to a solution of compound 19.5 (46.4 mg, 117 .mu.mol) and tert-butyl bromoacetate (43.4 .mu.L, 294 .mu.mol) in DMF (3 mL). The reaction mixture was stirred for 30 min, quenched with water (10 mL), and diluted with EtOAc (60 mL). The organic phase was washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 19.6 (34.8 mg, 84% yield) as a yellow oil.

g) Compound 19.7

TFA (1.0 mL, 13.0 mmol) was added dropwise to a solution of compound 19.6 (34.8 mg, 98.6 .mu.mol) in CH.sub.2Cl.sub.2 (2 mL) at room temperature. The reaction mixture stirred for 8 h and then concentrated under reduced pressure. The intermediate acid was diluted in CH.sub.2Cl.sub.2 (5 mL) and (COCl).sub.2 (25.8 .mu.L, 295.8 .mu.mol) was added followed by DMF (5 .mu.L). The reaction mixture was stirred for 15 min and CH.sub.2Cl.sub.2 was removed under reduced pressure. The intermediate acyl chloride was dissolved in THF (3 mL) and a solution of compound 2.5 (Example 2) (40.8 mg, 147.9 .mu.mol) in THF (1 mL) was added followed by pyridine (23.9 .mu.L, 295.8 .mu.mol). The reaction mixture was stirred for 1 h and then concentrated under reduced pressure to give compound 19.7 (50 mg, 91% yield).

h) Compound 1008

Ester 19.7 (50 mg, 90 .mu.mol) was dissolved in DMSO (4 mL) and aqueous 1 N NaOH (500 .mu.L, 500 .mu.mol) solution was added to the solution. The reaction mixture was stirred at room temperature for 1 h and then acidified (pH=2) with TFA. The solution was purified by RP-HPLC and the pure fractions containing the desired isomer (slowest eluting isomer) were concentrated to give compound 1008 (18.8 mg, 39% yield). .sup.1H NMR (DMSO-d.sub.6) 612.35 (broad s, 1H), 9.43 (s, 1H), 7.88 (d, J=8.6 Hz, 1H), 7.76 (d, J=2.0 Hz, 1H), 7.65-7.62 (m, 4H), 7.41 (s, 1H), 7.35 (d, J=8.0 Hz, 2H), 7.28 (d, J=7.8 Hz, 1H), 7.17 (d, J=7.2 Hz, 1H), 3.61 (s, 2H), 3.56 (s, 3H), 3.49 (s, 2H), 2.33 (s, 3H).

Example 20

(Entry 1009) (Bl 211844)

##STR00170## a) Compound 20.1

1-Amino-2,2-ethylenedioxypropane (2.00 g, 17.0 mmol) was added to a cooled (0.degree. C.) solution of compound 17.1 (Example 17) (3.17 g, 17.1 mmol) in ethanol (14 mL). The reaction mixture was stirred at reflux for 30 min and then cooled to 0.degree. C. (product precipitated as a white solid). Aqueous 12 N HCl solution (1.4 mL) was added and the mixture was again heated under reflux for 1 h (solution after heating). The solution was cooled to room temperature and the precipitate was collected by suction filtration to give compound 20.1 (2.01 g, 49% yieldl) as a white solid.

b) Compound 20.2

To a solution of compound 20.1 (90.3 mg, 378 .mu.mol) in DMF (5 mL) was added K.sub.2CO.sub.3 (157 mg, 1.13 mmol) followed by the methyl ester analog of compound 2.6 (Example 2) (150 mg, 378 .mu.mol). The reaction mixture was stirred at room temperature for 2 h. The mixture was then diluted with EtOAc (100 mL) and successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 95:5) to afford compound 20.2 (172 mg, 82% yield) as a white solid.

c) Compound 1009

Using a method similar to the one described in Example 19, Step h, compound 20.2 (165 mg, 298 .mu.mol) gave compound 1009 (160 mg, 99% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 10.14 (s, 1H), 7.95 (d, J=8.4 Hz, 1H), 7.79 (d, J=2.0 Hz, 1H), 7.66-7.63 (m, 4H), 7.50 (d, J=8.1 Hz, 1H), 7.37-7.33 (m, 4H), 4.03 (s, 2H), 3.63 (s, 2H), 2.42 (s, 3H), 1.98 (s, 3H).

Example 21

(Entry 1010) (Bl 211867)

##STR00171## a) Compound 21.1

To a solution of 2-chloro-4-methylbenzoic acid (3.21 g, 18.8 mmol) in CH.sub.2Cl.sub.2 (80 mL) at room temperature was added (COCl).sub.2 (3.28 mL, 37.6 mmol) followed by DMF (100 .mu.L). The reaction mixture was stirred for 3 h then was concentrated under reduced pressure. The intermediate acyl chloride was dissolved in THF (40 mL) and added dropwise to a cold (0.degree. C.) solution of CH.sub.2N.sub.2 in Et.sub.2O (ca. 0.6 M, 75 mL). The reaction mixture was stirred at room temperature for 4 h. The solvent was then carefully removed under reduced pressure and the residue dissolved in MeOH (100.0 mL). Ag.sub.2O (4.35 g, 18.8 mmol) was added to the solution and the reaction mixture was stirred at 0.degree. C. for 1 h and then heated at 60.degree. C. for 2 h. The reaction mixture was then cooled to room temperature and filtered through diatomaceous earth. The filtrate was concentrated under vacuum and the residue purified by flash chromatography (hexane:EtOAc, 8:2) to afford compound 21.1 (588 mg, 16% yield).

b) Compound 21.2

tert-Butoxybis(dimethylamino)methane (685 .mu.L, 3.32 mmol) was added to a solution of compound 21.1 (589 mg, 2.96 mmol) in THF (7 mL) at room temperature. The reaction mixture was stirred at room temperature for 2 h then was concentrated under reduced pressure. The residue was purified by flash chromatography (hexane:EtOAc, 1:1) to afford compound 21.2 (38.3 mg, 72% yield) as an orange oil.

c) Compound 21.3

Hydrazine monohydrate (113 .mu.L, 2.33 mmol) was added to a solution of compound 21.2 (538 mg, 2.12 mmol) in ethanol (5 mL). The reaction mixture was stirred at reflux for 3 h. The mixture was then concentrated under reduced pressure to give compound 21.3 (439 mg, 93% yield) as a yellow solid.

d) Compound 21.4

BBr.sub.3 (1.0 M in CH.sub.2Cl.sub.2, 8.12 mL, 8.12 mmol) was added to a cold (0.degree. C.) solution of compound 21.3 (452.3 mg, 2.03 mmol) in CH.sub.2Cl.sub.2 (20.0 mL). The reaction mixture was heated to room temperature and stirred for 3 h. The mixture was then cooled to 0.degree. C. and quenched with MeOH (5 mL). The solution was diluted with CH.sub.2Cl.sub.2 (100 mL) and successively washed with water, aqueous saturated NaHCO.sub.3 and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to give compound 21.4 (238 mg, 56% yield).

e) Compound 1010

To a solution of compound 21.4 (60.0 mg, 287.6 .mu.mol) in DMF (5 mL) at room temperature was added CsCO.sub.3 (281.1 mg, 862.7 .mu.mol) followed by compound 2.6 (Example 2) (114.1 mg, 287.6 .mu.mol). The reaction mixture was stirred at 50.degree. C. for 2 h. The mixture was then filtered through diatomaceous earth and to the filtrate was added aqueous 1 N NaOH solution (1.0 mL, 1.0 mmol). The reaction mixture was stirred at room temperature for 30 min and acidified (pH=2) with TFA. The solution was purified by RP-HPLC and the pure fractions were concentrated to give compound 1010 (6.8 mg, 5% yield) as a yellow solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 12.40 (broad s, 1H), 9.20 (s, 1H), 8.13 (d, J=8.6 Hz, 1H), 7.79 (d, J=1.9 Hz, 1H), 7.67-7.62 (m, 4H), 7.42 (d, J=7.9 Hz, 1H), 7.38 (s, 1H), 7.34 (d, 8.2 Hz, 2H), 7.21 (d, J=7.7 Hz, 1H), 4.64 (s, 2H), 3.60 (s, 2H), 2.34 (s, 3H).

Example 22

(Entry 1015) (Bl212043)

##STR00172## a) Compound 22.2

To a cold (-78.degree. C.) solution of compound 22.1 (2.50 g, 11.8 mmol) in THF (50 mL) was added 1.0 M LiHMDS in hexane (24.7 mL, 24.7 mmol). The reaction mixture was stirred at -78.degree. C. for 1 h and then acetic anhydride (1.33 mL, 14.1 mmol) was added dropwise. The reaction mixture was warmed to room temperature and stirred for 30 min. The mixture was then poured in aqueous 1 N HCl solution (50 mL), and extracted with EtOAc (2.times.50 mL). The organic extracts were washed with water, brine, dried (MgSO.sub.4), filtered and concentrated under vacuum. The crude product was purified by flash chromatography (hexane:EtOAc, 8:2) to afford compound 22.2 (2.37 g, 79% yield) as a clear oil.

b) Compound 22.3

Hydrazine hydrate (122 .mu.L, 3.93 mmol) was added to a solution of compound 22.2 (500 mg, 1.96 mmol) in ethanol (3.0 mL). The reaction mixture was stirred under reflux for 2 h. The reaction mixture was then cooled to room temperature and the white precipitate was collected under suction filtration to give compound 22.3 (255 mg, 59% yield).

c) Compound 1015

Using a method analogous to the one described in Example 2, Step g, compound 22.3 (24.8 mg, 111 .mu.mol) and benzyl 4-[4-(2-bromoacetamido)-3-chlorophenyl]-2,2-dimethylbut-3-ynoate (50.0 mg, 111 .mu.mol) (prepared from the benzyl ester analog of compound 4.3 and bromoacetyl bromide using a method similar to the one described in Example 2, Step f) gave compound 1015 (19.1 mg, 34% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) 612.88 (broad s, 1H), 11.96 (s, 1H), 9.18 (s, 1H), 8.11 (d, J=8.5 Hz, 1H), 7.49 (d, J=2.0 Hz, 1H), 7.36 (d, J=1.8 Hz, 1H), 7.34 (s, 1H), 7.27 (d, J=7.8 Hz, 1H), 7.17 (d, J=7.8 Hz, 1H), 4.79 (s, 2H), 2.32 (s, 3H), 2.07 (s, 3H), 1.45 (s, 6H).

Example 23

(Entry 1017) (Bl 212144)

##STR00173## a) Compound 23.1

To a solution of compound 2.3 (Example 2) (600 mg, 3.58 mmol) in MeCN (15 mL) at room temperature was added Et.sub.3N (1.1 mL, 7.9 mmol) followed by thiophosgene (300 .mu.L, 3.94 mmol). The reaction mixture was stirred at room temperature for 3 h. The mixture was diluted with EtOAc (100 mL) and successively washed with water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure to afford compound 23.1 (750 mg, 100% yield) as a brown oil.

b) Compound 23.2

To a solution of compound 23.1 (150 mg, 715 .mu.mol) in EtOH (15. mL) was added trifluoroacetylhydrazine (101 mg, 787 .mu.mol) and the reaction mixture was stirred at reflux for 2 h. The mixture was then concentrated under reduced pressure and the residue diluted with TFA (10 mL). The mixture was stirred at reflux for 2 h and the excess TFA was removed under reduced pressure. The mixture was diluted with EtOAc (50 mL) and successively washed with saturated aqueous NaHCO.sub.3, water and brine, dried (MgSO.sub.4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography (CH.sub.2Cl.sub.2:(CH.sub.3).sub.2CO, 9:1) to afford compound 23.2 (134 mg, 59% yield) as a pale yellow solid.

c) Compound 1017

Using a method analogous to the one described in Example 22, Step c, compound 23.2 (49.1 mg, 153.6 .mu.mol) gave compound 1017 (59.0 mg, 64% yield) as a white solid. .sup.1H NMR (DMSO-d.sub.6) .delta. 9.97 (s, 1H), 7.83 (d, J=8.4 Hz, 1H), 7.67 (d, J=8.3 Hz, 1H), 7.52 (d, J=1.8 Hz, 1H), 7.51 (d, J=1.9 Hz, 1H), 7.35 (dd, J=8.4, 1.8 Hz, 1H), 7.28 (dd, J=8.2, 1.8 Hz, 1H), 4.35 (s, 2H), 2.08-2.02 (m, 1H), 1.45 (s, 6H), 1.09-1.05 (m, 2H), 0.87-0.83 (m, 2H).

Example 24

Reverse Transcriptase (RT) Assays

Enzymatic Assay (IC.sub.50)

The enzymatic assay employed is described as follows: The reverse transcriptase (RT) enzyme assay has been adapted to a 96-well microtiter plate format and uses PicoGreen.TM. as a fluorescent intercalator. More explicitly, the HIV-1 RT enzyme was thawed and appropriately diluted into Tris/HCl 50 mM pH 7.8 containing NaCl 60 mM, MgCl.sub.2.6H.sub.2O 2 mM, DTT 6 mM, GSH 2 mM and 0.02% w/v Chaps to give .apprxeq.10 nM enzyme. To 10 .mu.L of this enzyme solution was added 10 .mu.L of inhibitor solution (40 .mu.M to 2.032 nM inhibitor in the same assay buffer as above containing 4% v/v DMSO). The plate was pre-incubated for 15 minutes at room temperature before proceeding to the next step. In this pre-incubation step, the highest and lowest inhibitor concentrations were 20 .mu.M and 1.016 nM respectively and the concentration of DMSO was 2% v/v. Then the enzymatic reaction was initiated by addition of 20 .mu.L of substrate solution. The final reaction mixture contained Tris/HCl 50 mM pH 7.8, NaCl 60 mM, MgCl.sub.2.6H.sub.2O 2 mM, DTT 6 mM, GSH 2 mM, CHAPS 0.02% w/v, DMSO 1% v/v, poly rC 45 nM, dG.sub.15 4.5 nM, dGTP 3.6 .mu.M, and 2.5 nM enzyme. In this incubation step, the highest and lowest inhibitor concentrations were 10 .mu.M and 0.508 nM respectively. After addition of the substrate cocktail, the plate was covered with a plastic seal and incubated for 50 minutes at 37.degree. C. in a dry incubator. The reaction was then quenched by addition of 5 .mu.L of EDTA 0.5 M. The plate was shaken for 30 seconds at medium speed and incubated for 5 minutes at room temperature. Then 160 .mu.L of PicoGreen.TM. 1:400 dilution from commercial stock (diluted in Tris 20 mM pH 7.5 with EDTA 1 mM) was added and the plate was shaken for 30 seconds and incubated for 10 minutes at room temperature. The plate was then analyzed using a POLARstar Galaxy fluorometer (BMG Labtechnologies) with .lamda..sub.ex and .lamda..sub.em of 485 nm and 520 nm respectively. Each well was read for 1.25 second. Each row contained at its extremities a blank and a control well.

P24 Cellular Assay (EC.sub.50)

The p24 assay is as described in WO 01/96338.

C8166 HIV-1 Luciferase Assay (EC.sub.50)

Plasmid: pGL3 Basic LTR/TAR #12

Plasmid is the pGL3 Basic Vector (a promoterless luciferase expression vector from Promega catalogue #E1751) with the addition of HIV-1 HxB2 LTR sequence from nucleotide -138 to +80 (Sca1-HindIII) upstream of the luciferase gene and the gene for blasticidine resistance cloned in.

Cells: C8166 LTRIuc #A8-F5-G7

C8166 cells are a human T-lymphotrophic virus type 1 immortalized but nonexpressing line of cord blood lymphocytes and are highly permissive to HIV-1 infection. The reporter cells were made by electroporating C8166 cells with pGL3 Basic LTR/TAR and then selecting positive clones with blasticidine. The clone C8166-LTRluc #A8-F5-G7 was selected by 3 consecutive rounds of limiting dilution under blasticidine selection.

Media: Complete media consisting of: RPMI 1640+10% FBS+10.sup.-5 M .beta.-mercaptoethanol+10 .mu.g/mL gentamycin. Cultures are maintained in complete media with 5 .mu.g/mL blasticidine, however, selection is removed for the assay.

Luciferase Assay Protocol

Preparation of Compounds

Serial dilutions of HIV-1 inhibitor compounds are prepared in complete media from 10 mM DMSO stock solutions. Eleven serial dilutions of 2.5.times. are made at 8.times. desired final concentration in a 1 mL deep well titer plate (96 wells). The 12.sup.th well contains complete media with no inhibitor and serves as the positive control. All samples contain the same concentration of DMSO (.ltoreq.0.1% DMSO). A 25 .mu.L aliquot of inhibitor is added, to triplicate wells, of a 96 well tissue culture treated clear view black microtiter plate (Corning Costar catalogue # 3904). The last row is reserved for uninfected C8166 LTRIuc cells to serve as the background blank control and the first row is media alone.

Infection of Cells

Count C8166 LTRluc cells and place in a minimal volume of complete RPMI 1640 in a tissue culture flask (ex. 30.times.10.sup.6 cells in 10 ml media/25 cm.sup.2 flask). Infect cells with HIV-1 at a moi of 0.005. Incubate cells for 1.5 h at 37.degree. C. on a rotating rack in a 5% CO.sub.2 incubator. Resuspend cells in complete RPMI to give a final concentration of 25,000-cells/175 .mu.L. Add 175 .mu.L of cell mix to wells of 96 well microtiter plate containing 25 .mu.L 8.times. inhibitors. Add 25,000 uninfected C8166-LTRluc cells/well in 200 .mu.L complete RPMI to last row for background control. Incubate cells at 37.degree. C. in 5% CO.sub.2 incubator for 3 days.

Luciferase Assay

Add 50 .mu.L Steady Glo (luciferase substrate T.sub.1/2=5 h Promega catalogue # E2520) to each well of the 96 well plate. Determine the relative light units (RLU) of luciferase using the BMG LUMIstar Galaxy luminometer. Plates are read from the bottom for 2 seconds per well with a gain of 240.

The level of inhibition (% inhibition) of each well containing inhibitor was calculated with the following equation:

##EQU00001##

The calculated % inhibition values were then used to determine EC.sub.50, slope factor (n) and maximum inhibition (I.sub.max) by the non-linear regression routine NLIN procedure of SAS using the following equation:

.times. ##EQU00002##

TABLES

Tables 1 to 7 illustrate further compounds of the present invention, which can be synthesized in analogy to the methods as described hereinbefore, optionally modified by procedures known to the one skilled in the art. All compounds shown in the tables show IC.sub.50 values in the enzymatic assay described in Example 24 of less than 1 .mu.M against the K103NNY181C mutant reverse transcriptase. As well, most compounds shown in Tables 1 to 7 below show IC.sub.50 values in the enzymatic assay described in Example 24 of less than 1 .mu.M against the wild type HIV reverse transcriptase. All compounds shown in Tables 1 to 7 below are also active in at least one of the cellular assays described in Example 24.

Retention times (t.sub.R) for each compound were measured using the standard analytical HPLC conditions described in the Examples. As is well known to one skilled in the art, retention time values are sensitive to the specific measurement conditions. Therefore, even if identical conditions of solvent, flow rate, linear gradient, and the like are used, the retention time values may vary when measured, for example, on different HPLC instruments. Even when measured on the same instrument, the values may vary when measured, for example, using different individual HPLC columns, or, when measured on the same instrument and the same individual column, the values may vary, for example, between individual measurements taken on different occasions.

TABLE-US-00002 TABLE 1 ##STR00174## IC.sub.50 t.sub.R MS mut BI21 Cpd R.sup.1--Ar X R.sup.4 (min) (MH.sup.+) (nM) 1421 1001 ##STR00175## S ##STR00176## 6.9 599.1601.1603.1 25.5 1469 1002 ##STR00177## S ##STR00178## 6.5 543.0544.0547.0 795 1531 1003 ##STR00179## O ##STR00180## 6.4 510.1512.1514.0 770 1546 1004 ##STR00181## S ##STR00182## 6.2 526.0528.0530.0 420 1584 1005 ##STR00183## S ##STR00184## 6.6 527.1529.1531.0 730 1585 1006 ##STR00185## S ##STR00186## 8.1 568.1570.1572.0 216 1689 1007 ##STR00187## S ##STR00188## 7.4 542.0544.0546.0(M - H).sup.- 107 1786 1008 ##STR00189## S ##STR00190## 6.8 541.0543.0545.0 178 1844 1009 ##STR00191## S ##STR00192## 5.4 540.1542.1544.0 549 1867 1010 ##STR00193## O ##STR00194## 6.2 510.1512.0 156 1907 1011 ##STR00195## S ##STR00196## 6.1 572.1574.1576.0 21 1936 1012 ##STR00197## S ##STR00198## 6.7 544.1546.1548.0 389 1938 1013 ##STR00199## S ##STR00200## 5.5 636.2638.2640.0 75 1939 1014 ##STR00201## S ##STR00202## 5.3 622.2624.2626.0 81 2043 1015 ##STR00203## O ##STR00204## 6.6 500.1502.1504.0 48 2045 1016 ##STR00205## O ##STR00206## 6.3 472.1474.1476.0 48 2144 1017 ##STR00207## S ##STR00208## 8.8 597.1599.1602.0 72 2148 1018 ##STR00209## S ##STR00210## 7.4 689.2691.2693.0 51 2207 1019 ##STR00211## S ##STR00212## 7.5 569.1571.1573.0 525

TABLE-US-00003 TABLE 2 ##STR00213## IC.sub.50 t.sub.R MS mut BI21 Cpd R.sup.1 R.sup.2 R.sup.3 R.sup.41 (min) (MH.sup.+) (nM) 1175 2001 ##STR00214## Cl H --COOMe 6.0 528.1530.0532.0 133 1176 2002 ##STR00215## Cl H --COOH 5.2 514.0516.0518.0 53 1177 2003 ##STR00216## Cl H --CH.sub.2COOMe 5.9 542.1544.0546.0 53 1178 2004 ##STR00217## Cl H --CH.sub.2COOH 5.3 528.0530.0532.0 48 1285 2005 ##STR00218## Cl H --OMe 9.3 500.1502.1504.0 78 1288 2006 ##STR00219## Cl H --OH 7.7 486.0488.0490.0 29 1298 2007 ##STR00220## Cl H --O--CH.sub.2COOH 7.5 544.0546.0548.0 22 1302 2008 ##STR00221## Cl H --COOMe 8.3 570.0572.1574.1 39 1309 2009 ##STR00222## Cl H --CH.sub.2CH.sub.2OH 7.6 514.1516.1518.0 28 1317 2010 ##STR00223## NO.sub.2 H --CH.sub.2COOMe 8.7 553.1555.1 40 1321 2011 ##STR00224## NO.sub.2 H --CH.sub.2COOH 7.4 539.1541.1 49 1322 2012 ##STR00225## Cl H --CH.sub.2CONH.sub.2 6.8 527.1529.1631.0 15 1323 2013 ##STR00226## NO.sub.2 H --CH.sub.2CONH.sub.2 6.8 538.1540.1 20 1331 2014 ##STR00227## NO.sub.2 H --SO.sub.2NH.sub.2 6.9 560.0562.0 69 1361 2015 ##STR00228## Cl H --CH.sub.2COOH 7.6 570.1572.1574.0 28 1380 2016 ##STR00229## Cl H --O--CH.sub.2COOH 7.6 586.0588.0590.0 22 1426 2017 ##STR00230## Cl H --CH.sub.2CONHSO.sub.2Me 6.6 605.0607.0609.0 38 1533 2018 ##STR00231## Cl H --O--CH.sub.2COOH 7.5 620.1622.1624.0 12 1549 2019 ##STR00232## Cl H --C(Me).sub.2COOH 7.7 598.1600.1602.0 33 1560 2020 ##STR00233## Cl H --CH.sub.2COOH 7.6 604.0606.0608.0 18 1561 2021 ##STR00234## Cl H --CH.sub.2COOH 6.9 540.0542.0544.0(M - H).sup.- 20 1562 2022 ##STR00235## Cl H ##STR00236## 6.5 641.2643.2645.2 42 1565 2023 ##STR00237## Cl H --CH.sub.2COOH 6.9 582.0584.0586.0 169 1576 2024 ##STR00238## Cl H ##STR00239## 6.1 627.3629.3631.0 26 1577 2025 ##STR00240## Cl H --C(Me).sub.2COOH 7.3 570.1572.1574.0 42 1578 2026 ##STR00241## Cl H --C(Me).sub.2COOH 7.1 574.1576.1578.1 48 1590 2027 ##STR00242## Cl H --SO.sub.2Me 8.7 588.0590.0592.1(M - H).sup.- 23 1591 2028 ##STR00243## Cl H --CH.sub.2CH.sub.2COOH 8.8 582.1584.1586.1(M - H).sup.- 9.3 1592 2029 ##STR00244## Cl H ##STR00245## 6.1 625.1627.2629.2 19 1678 2030 ##STR00246## Cl H --CH.sub.2COOH 7.7 564.1566.1568.1 64 1679 2031 ##STR00247## Cl H ##STR00248## 5.7 655.3657.3658.2 34 1690 2032 ##STR00249## Cl H ##STR00250## 8.7 580.1582.1582.0(M - H).sup.- 6.6 1695 2033 ##STR00251## Cl H --CH.sub.2COOH 7.4 554.2556.2558.2 15 1732 2034 ##STR00252## Cl H --CH.sub.2COOH 6.9 598.1600.1602.1 178 1737 2035 ##STR00253## Cl H --CH.sub.2COOH 5.4 571.0573.0575.0 269 1744 2036 ##STR00254## Cl H ##STR00255## 5.9 622.2624.2626.0 67 1745 2037 ##STR00256## Cl H --CH.sub.2COOH 7.3 624.1626.1628.1 49 1751 2038 ##STR00257## Cl H --CH.sub.2COOH 7.4 562.0564.0566.0(M - H).sup.- 16 1760 2039 ##STR00258## Cl H ##STR00259## 6.1 639.2641.2643.3 28 1774 2040 ##STR00260## Cl H ##STR00261## 5.7 683.1685.1687.1 36 1775 2041 ##STR00262## Cl H ##STR00263## 5.8 641.1643.1645.0 28 1777 2042 ##STR00264## Cl H ##STR00265## 5.7 641.2643.2645.0 15 1778 2043 ##STR00266## Cl H ##STR00267## 5.9 657.2659.2661.0 32 1809 2044 ##STR00268## Cl H --CH.sub.2COOH 6.9 594.0596.0598.0(M - H).sup.- 29 1896 2045 ##STR00269## Cl H --CH.sub.2COOH 6.9 554.1556.1558.1 16 1946 2046 ##STR00270## Cl H ##STR00271## 6.2 609.2611.2613.2 6.95 1947 2047 ##STR00272## Cl H ##STR00273## 6.3 623.1625.1627.1 63.5 1948 2048 ##STR00274## Br H --CH.sub.2COOH 6.7 598.0600.0602.0 13 1981 2049 ##STR00275## Cl H ##STR00276## 5.8 651.1653.1655.0 54 2004 2050 ##STR00277## Cl H ##STR00278## 5.9 651.1653.1655.1(M - H).sup.- 359 2013 2051 ##STR00279## Cl F ##STR00280## 6.1 641.1643.1645.1 30.5 2032 2052 ##STR00281## Cl H --C(Me).sub.2COOH 7.0 582.1584.1586.0 19 2035 2053 ##STR00282## Cl H ##STR00283## 6.2 655.1657.1659.0 24 2047 2054 ##STR00284## Cl H ##STR00285## 5.9 669.1671.1673.0 69.5 2052 2055 ##STR00286## Cl H --C(Me).sub.2COOH 7.2 582.1584.1586.0(M - H).sup.- 56 2063 2056 ##STR00287## Cl H ##STR00288## 6.1 611.2613.2615.0 29 2124 2057 ##STR00289## Cl F ##STR00290## 5.9 627.2629.2631.0 8.8 2125 2058 ##STR00291## Cl F ##STR00292## 5.7 655.1657.1659.0 25 2257 2059 ##STR00293## Cl F ##STR00294## 5.9 691.0693.0695.0 13

TABLE-US-00004 TABLE 3 ##STR00295## t.sub.R MS IC.sub.50 BI21 Cpd R.sup.1 R.sup.4 (min) (MH.sup.+) mut (nM) 1283 3001 ##STR00296## ##STR00297## 9.3 528.0530.0532.0 146 1284 3002 ##STR00298## ##STR00299## 9.0 542.1544.1546.1 120 1286 3003 ##STR00300## ##STR00301## 7.7 512.0514.0516.0(M - H).sup.- 241 1287 3004 ##STR00302## ##STR00303## 7.7 528.0530.0532.0 93 1299 3005 ##STR00304## ##STR00305## 8.2 478.0480.0482.0 305 1300 3006 ##STR00306## ##STR00307## 6.7 464.0466.0468.0 265 1318 3007 ##STR00308## --CONHMe 6.1 451.0453.0455.0 290 1320 3008 ##STR00309## --CONHEt 6.4 465.0467.0469.0 300 1383 3009 ##STR00310## ##STR00311## 7.8 619.9621.9623.9 154 1439 3010 ##STR00312## ##STR00313## 7.7 600.1602.1604.1 33 1440 3011 ##STR00314## ##STR00315## 7.8 598.0600.0602.0(M - H).sup.- 340 1441 3012 ##STR00316## ##STR00317## 7.6 601.1606.1608.1 36 1473 3013 ##STR00318## ##STR00319## 7.7 617.9619.9621.0(M - H).sup.- 24 1513 3014 ##STR00320## ##STR00321## 8.9 477.1479.0481.1 142 1514 3015 ##STR00322## ##STR00323## 5.0 492.1494.1496.0 185 1516 3016 ##STR00324## ##STR00325## 6.3 461.1463.1465.0 359 1517 3017 ##STR00326## ##STR00327## 6.4 475.1477.1479.0 308 1518 3018 ##STR00328## ##STR00329## 4.7 460.1462.1464.0 269 1532 3019 ##STR00330## ##STR00331## 5.5 462.1464.0466.0 539 1552 3020 ##STR00332## ##STR00333## 7.4 604.1606.1608.1 23 1570 3021 ##STR00334## --SO.sub.2NHMe 7.9 529.1531.0533.0 63 1664 3022 ##STR00335## ##STR00336## 7.4 556.1558.1560.0 50 1668 3023 ##STR00337## --SO.sub.2NHCH(Me).sub.2 10.4 557.1559.1561.0 284 1669 3024 ##STR00338## ##STR00339## 11.2 619.2621.2623.2 516 1670 3025 ##STR00340## --SO.sub.2N(Me).sub.2 10.5 543.1545.1547.1 217 1671 3026 ##STR00341## ##STR00342## 10.8 591.2593.2595.2 423 1673 3027 ##STR00343## --SO.sub.2NH(CH.sub.2).sub.2OH 8.7 559.1561.1563.1 81 1676 3028 ##STR00344## ##STR00345## 11.0 605.1607.1610.0 440 1733 3029 ##STR00346## ##STR00347## 5.7 502.0504.0506.0 76 1763 3030 ##STR00348## ##STR00349## 8.0 562.0564.0566.0 28 1784 3031 ##STR00350## ##STR00351## 8.4 586.1588.1590.0 15.5 1889 3032 ##STR00352## --SO.sub.2NHCH.sub.2COOH 6.3 571.0573.0575.0 97.5 1937 3033 ##STR00353## ##STR00354## 5.7 563.1565.1567.1 201 1943 3034 ##STR00355## ##STR00356## 5.4 565.2567.2569.0 111.5 1944 3035 ##STR00357## ##STR00358## 5.7 619.1621.1623.0(M - H).sup.- 355 1983 3036 ##STR00359## ##STR00360## 5.1 582.0584.1586.0 88 1986 3037 ##STR00361## ##STR00362## 5.0 597.1599.1601.1 112 2014 3038 ##STR00363## ##STR00364## 6.3 657.1659.1661.1 167 2038 3039 ##STR00365## ##STR00366## 5.5 554.0556.0558.0(M - H).sup.- 267.5 2062 3040 ##STR00367## ##STR00368## 5.9 555.0557.0559.0(M - H).sup.- 236.5 2183 3041 ##STR00369## ##STR00370## 7.6 504.0506.0508.0 94 2199 3042 ##STR00371## ##STR00372## 7.4 609.0611.0613.0(M - H).sup.- 387 2208 3043 ##STR00373## ##STR00374## 5.9 576.0578.0580.0 2209 3044 ##STR00375## ##STR00376## 9.0 518.0520.0522.0 58.5 2282 3045 ##STR00377## ##STR00378## 5.9 516.2518.1520.1 380.5 2382 3046 ##STR00379## ##STR00380## 7.2 536.1538.1540 105.5

TABLE-US-00005 TABLE 4 ##STR00381## IC.sub.50 t.sub.R MS mut BI21 Cpd R.sup.1 R.sup.2 R.sup.3 R.sup.9 (min) (MH.sup.+) (nM) 1542 4001 ##STR00382## Cl H --(CH.sub.2).sub.2OH 7.3 504.3506.3508.3 16 1557 4002 ##STR00383## Cl H ##STR00384## 8.7 536.1538.1540.1 268 1563 4003 ##STR00385## Cl H --(CH.sub.2).sub.4OH 8.4 532.1534.1536.0 643 1566 4004 ##STR00386## Cl H --(CH.sub.2).sub.3OH 6.4 518.1520.1522.1 16 1567 4005 ##STR00387## Cl H --C(Me).sub.2OH 6.4 518.15201522.1 20 1571 4006 ##STR00388## Cl H --CH.sub.2OH 6.0 490.2492.2494 11 1583 4007 ##STR00389## Cl H --C(Me).sub.2OH 5.8 490.2492.1494.0 38 1661 4008 ##STR00390## Cl H --CH.sub.2N(Et).sub.2 5.5 545.2547.2549.2 94 1672 4009 ##STR00391## Cl H --(CH.sub.2).sub.2CH.sub.3 8.1 502.1504.1506.1 8.9 1675 4010 ##STR00392## Cl H ##STR00393## 5.3 559.1561.1563.2 27 1677 4011 ##STR00394## Cl H --C(Me).sub.2CO.sub.2H 6.5 546.1548.1550.0 25 1683 4012 ##STR00395## Cl H ##STR00396## 5.5 543.2545.2547.2 46 1686 4013 ##STR00397## Cl H ##STR00398## 5.8 658.3660.3662.0 62 1687 4014 ##STR00399## Cl H ##STR00400## 5.6 557.2559.2561.2 88 1688 4015 ##STR00401## Cl H ##STR00402## 5.4 572.2574.2576.2 40 1692 4016 ##STR00403## Cl H --C(Me).sub.2CH.sub.2OH 6.6 532.2534.2536.2 35 1729 4017 ##STR00404## Cl H ##STR00405## 6.8 585.2587.2589.2 41 1730 4018 ##STR00406## Cl H --C(Me).sub.2OH 5.9 502.1504.1506.1 17 1731 4019 ##STR00407## Cl H --C(Me).sub.2COOH 6.0 530.1532.1534.1 22 1736 4020 ##STR00408## Cl H ##STR00409## 7.1 574576578(M - H).sup.- 33 1752 4021 ##STR00410## Cl H --C(Me).sub.2OH 5.7 487.0489.0491.0 361 1753 4022 ##STR00411## Cl H --C(Me).sub.2OH 6.6 548.0550.0552.0 185 1755 4023 ##STR00412## Cl H ##STR00413## 5.8 658.2660.2662.2 64 1756 4024 ##STR00414## Cl H ##STR00415## 7.2 665.2667.2669.2(M - H).sup.- 35 1757 4025 ##STR00416## Cl H ##STR00417## 7.3 693.2695.2697.2(M - H).sup.- 44 1758 4026 ##STR00418## Cl H ##STR00419## 6.3 719.2721.2723.2(M - H).sup.- 63 1759 4027 ##STR00420## Cl H ##STR00421## 6.9 685.2687.2689.2(M - H).sup.- 26 1761 4028 ##STR00422## Cl H --C(Me).sub.2OH 6.8 542.0544.0546.0(M - H).sup.- 256 1764 4029 ##STR00423## Cl H --C(Me).sub.2OH 6.7 548.0550.0552.0 212 1765 4030 ##STR00424## Cl H --C(Me).sub.2OH 6.9 542.0544.0546.0(M - H).sup.- 21 1766 4031 ##STR00425## Cl H --C(Me).sub.2OH 6.9 542.0544.0546.0(M - H).sup.- 264 1767 4032 ##STR00426## Cl H ##STR00427## 7.4 500.1502.1504.1 39 1779 4033 ##STR00428## Cl H ##STR00429## 6.5 575.1577.1579.1 36 1783 4034 ##STR00430## Cl H --CH.sub.2OC(O)NH.sub.2 6.0 533.1535.0537.0 8.9 1787 4035 ##STR00431## Cl H ##STR00432## 6.0 633.2635.2637.2 56 1788 4036 ##STR00433## Cl H ##STR00434## 7.2 657.2659.2661 36 1789 4037 ##STR00435## Cl H ##STR00436## 7.7 653.2655.2657(M - H).sup.- 66 1790 4038 ##STR00437## Cl H ##STR00438## 7.4 627.2629.2631.0(M - H).sup.- 75 1791 4039 ##STR00439## Cl H ##STR00440## 7.3 643.2645.2647.0(M - H).sup.- 40 1792 4040 ##STR00441## Cl H ##STR00442## 7.7 653.2655.2657.0 58 1793 4041 ##STR00443## Cl H ##STR00444## 6.1 652.2654.2656.0 35 1794 4042 ##STR00445## Cl H ##STR00446## 7.1 573.2575.2577.0(M - H).sup.- 37 1795 4043 ##STR00447## Cl H ##STR00448## 6.8 654.3(M + Na) 35 1796 4044 ##STR00449## Cl H ##STR00450## 8.0 649.2651.2653.0(M - H).sup.- 296 1797 4045 ##STR00451## Cl H ##STR00452## 7.5 693.2695.2697.0(M - H).sup.- 32 1798 4046 ##STR00453## Cl H ##STR00454## 7.2 659.2661.2663.0(M - H).sup.- 23 1799 4047 ##STR00455## Cl H ##STR00456## 5.8 646.3648.3650.0 66 1800 4048 ##STR00457## Cl H ##STR00458## 6.9 617.2619.2621.0(M - H).sup.- 26 1801 4049 ##STR00459## Cl H ##STR00460## 7.3 601.2603.2605.0(M - H).sup.- 30 1802 4050 ##STR00461## Cl H ##STR00462## 6.9 603.2605.2607.0(M - H).sup.- 66 1803 4051 ##STR00463## Cl H ##STR00464## 7.3 587.2589.2591.0(M - H).sup.- 35 1804 4052 ##STR00465## Cl H ##STR00466## 7.0 631.2633.2635.0(M - H).sup.- 30 1805 4053 ##STR00467## Cl H ##STR00468## 7.2 645.2647.2649.0(M - H).sup.- 25 1806 4054 ##STR00469## Cl H ##STR00470## 7.7 640.2642.2644.0(M - H).sup.- 35 1807 4055 ##STR00471## Cl H ##STR00472## 7.0 645.2647.2649.0(M - H).sup.- 15 1808 4056 ##STR00473## Cl H ##STR00474## 6.6 631.2633.2635.0(M - H).sup.- 26 1834 4057 ##STR00475## Me H --C(Me).sub.2COOH 6.1 524.1526.0528.0 96 1843 4058 ##STR00476## Cl H --C(Me).sub.2COOH 7.0 570.0572.0574.0 63 1865 4059 ##STR00477## Cl H --C(Me).sub.2OH 6.7 544.1546.1548.0 656 1866 4060 ##STR00478## Cl H --C(Me).sub.2OH 6.8 544.1546.1548.0 42 1870 4061 ##STR00479## Cl H --(CH.sub.2).sub.3OC(O)NH.sub.2 6.3 561.1563.1565.0 16 1874 4062 ##STR00480## Cl H ##STR00481## 6.4 530.1532.1534.0 53 1878 4063 ##STR00482## Cl H --C(Me).sub.2COOH 6.9 572.1574.1576.0 51.5 1892 4064 ##STR00483## Cl H ##STR00484## 6.9 559.1561.1563.1 11.5 1897 4065 ##STR00485## Cl H --C(Me).sub.2OH 6.7 502.1504.1506.1 13.5 1904 4066 ##STR00486## Cl H ##STR00487## 7.5 627.2629.2631.0(M - H).sup.- 732 1905 4067 ##STR00488## Cl H ##STR00489## 5.9 516.2518.1520.1 17 1909 4068 ##STR00490## Cl H ##STR00491## 5.1 527.1529.1531.0(M - H).sup.- 38.5 1910 4069 ##STR00492## Cl H ##STR00493## 6.7 601.1603.1605.0 112 1931 4070 ##STR00494## Cl H --C(Me).sub.2OH 7.1 536.0538.0540.0 82.5 1933 4071 ##STR00495## Cl H ##STR00496## 5.6 558.1560.1562.0 8.75 1934 4072 ##STR00497## Cl H ##STR00498## 4.7 499.0501.0503.0(M - H).sup.- 38.5 1935 4073 ##STR00499## Cl H ##STR00500## 6.6 532.1534.1536.0 51 1945 4074 ##STR00501## Cl H --C(Me).sub.2OMe 6.4 516.1518.1520.0 35.5 1950 4075 ##STR00502## Cl H ##STR00503## 5.8 572.1574.1576.0 20.5 1952 4076 ##STR00504## Cl H ##STR00505## 5.8 578.9581.9583 17.5 1960 4077 ##STR00506## Cl H --C(Me).sub.2COOMe 7.3 572.0574.0576.0 44.5 1962 4078 ##STR00507## Br H --C(Me).sub.2OH 6.5 546.0548.0550.0 13.5 1978 4079 ##STR00508## Cl H ##STR00509## 5.9 569.1572.1574.0 6.8 1979 4080 ##STR00510## Cl H ##STR00511## 5.6 543.1545.1547.0 8.45 1980 4081 ##STR00512## Cl H ##STR00513## 6.1 573.1575.1577.0 19.5 1987 4082 ##STR00514## Cl H ##STR00515## 5.5 599.0601.0603.0 80 1989 4083 ##STR00516## Cl H ##STR00517## 5.6 514.0516.0518.0 29 1999 4084 ##STR00518## Cl H ##STR00519## 5.6 528.0530.0532 43 2000 4085 ##STR00520## Cl H ##STR00521## 5.2 606.0608.0610.0 12 2001 4086 ##STR00522## Cl H ##STR00523## 5.6 622.0624.0626.0 12 2002 4087 ##STR00524## Cl H ##STR00525## 5.0 586.0588.0590.0 21.5 2003 4088 ##STR00526## Cl H --COOH 5.8 504.0506.0508.0 38.5 2007 4089 ##STR00527## Cl H --H 6.4 460.0462.0464.0 69 2009 4090 ##STR00528## Cl H ##STR00529## 6.5 558.0560.0562.0 23 2010 4091 ##STR00530## Cl H --CH.sub.2OH 5.3 474.0476.0478.0 20.5 2015 4092 ##STR00531## Cl H ##STR00532## 5.2 567.1569.1571.1 61.5 2017 4093 ##STR00533## Cl H --COOH 5.3 488.0490.0492.0 47 2026 4094 ##STR00534## Cl H ##STR00535## 4.6 596.2598.2600 48.5 2027 4095 ##STR00536## Cl H ##STR00537## 4.5 610.2612.2614.0 98.5 2028 4096 ##STR00538## Cl H ##STR00539## 4.9 597.1599.1601.0 37 2031 4097 ##STR00540## Cl H H 5.9 444.1446.0448.0 44 2033 4098 ##STR00541## Cl H ##STR00542## 5.7 544.1546.1548.0(M - H).sup.- 16.5 2034 4099 ##STR00543## Cl H --C(Me).sub.2COOH 6.9 574.0576.0578.0(M - H).sup.- 42.5 2040 4100 ##STR00544## Cl F --C(Me).sub.2COOH 6.7 548.1550.1552.0 18 2041 4101 ##STR00545## Cl F --C(Me).sub.2COOH 6.6 575.9577.9579.0 57 2046 4102 ##STR00546## Cl H --(CH.sub.2).sub.2COOH 5.9 532.1534.1536.0 24.5 2053 4103 ##STR00547## Cl H ##STR00548## 5.5 613.2615.2617.0 218

2054 4104 ##STR00549## Cl H ##STR00550## 5.2 629.2631.2633.0 64.5 2055 4105 ##STR00551## Cl H ##STR00552## 4.7 628.2630.2632.0 66.5 2056 4106 ##STR00553## Cl H ##STR00554## 6.2 605.1607.1609.0 19 2057 4107 ##STR00555## Cl H ##STR00556## 6.0 613.1615.1617.0 15 2058 4108 ##STR00557## Cl H ##STR00558## 5.1 614.2616.2618.0 27 2059 4109 ##STR00559## Cl H ##STR00560## 5.4 610.1612.1614.0 10.8 2060 4110 ##STR00561## Cl H ##STR00562## 5.0 612.2614.2616.2 11.5 2061 4111 ##STR00563## Cl H ##STR00564## 6.0 607.1609.1610.2 8.6 2064 4112 ##STR00565## Cl H ##STR00566## 6.8 484.1486.1488.0 54 2065 4113 ##STR00567## Cl H ##STR00568## 4.3 581.1583.1585.1 24.5 2068 4114 ##STR00569## Cl H --C(Me).sub.2COOH 6.1 520.0522.0524.0 200 2070 4115 ##STR00570## Cl H ##STR00571## 5.5 626.2628.2630.0 2071 4116 ##STR00572## Cl H ##STR00573## 4.7 614.2616.2618.0 2072 4117 ##STR00574## Cl H ##STR00575## 5.2 585.2587.2589.0 52 2073 4118 ##STR00576## Cl H ##STR00577## 5.4 599.2601.2603.2 89.5 2074 4119 ##STR00578## Cl H ##STR00579## 5.4 585.1587.1589.1 121 2076 4120 ##STR00580## Cl H ##STR00581## 5.9 650.1652.1654.0 17.5 2077 4121 ##STR00582## Cl H --C(Me).sub.2COOH 6.9 530.0532.0534.0(M - H).sup.- 33.5 2078 4122 ##STR00583## Cl F --C(Me).sub.2COOH 7.1 564.1566.1568.0 15.5 2081 4123 ##STR00584## Cl H ##STR00585## 5.1 612.1614.1616.0 38 2082 4124 ##STR00586## Cl H ##STR00587## 4.6 627.1629.1631.0 27 2083 4125 ##STR00588## Cl H ##STR00589## 4.9 642.2644.1646.0 26 2084 4126 ##STR00590## Cl H ##STR00591## 5.2 720.2722.2724.0 78 2085 4127 ##STR00592## Cl H ##STR00593## 4.5 666.2668.2670.0 20.5 2086 4128 ##STR00594## Cl H ##STR00595## 5.1 553.1555.1557.1(M - H).sup.- 27 2087 4129 ##STR00596## Cl H ##STR00597## 4.9 598.1600.1602.1 15.5 2088 4130 ##STR00598## Cl H ##STR00599## 5.2 607.2609.2611.0 43 2089 4131 ##STR00600## Cl H --(CH.sub.2).sub.2OH 5.4 488.1490.1492.0 8.95 2093 4132 ##STR00601## Cl H ##STR00602## 4.9 541.1543.1545.0 49.5 2094 4133 ##STR00603## Cl H ##STR00604## 6.4 470.0472.1474.0 53.5 2095 4134 ##STR00605## Cl H ##STR00606## 4.6 571.1573.1575.0 28.5 2096 4135 ##STR00607## Cl H ##STR00608## 4.1 556.1558.1560.0 29 2102 4136 ##STR00609## Cl H --CH.sub.2COOH 5.3 502.1504.1506.0 32.5 2109 4137 ##STR00610## Cl H ##STR00611## 4.3 527.0529.0531.0(M - H).sup.- 88 2110 4138 ##STR00612## Cl H ##STR00613## 4.7 614.1616.1618.0 43 2111 4139 ##STR00614## Cl H ##STR00615## 5.8 635.1637.1639.1 20.5 2114 4140 ##STR00616## Cl H ##STR00617## 5.6 597.1599.1601.0 51 2115 4141 ##STR00618## Cl H ##STR00619## 5.3 571.1573.1575.1 40 2116 4142 ##STR00620## Cl H ##STR00621## 5.1 627.2629.2631.0 50.5 2117 4143 ##STR00622## Cl H ##STR00623## 6.6 626.2628.2630.2 65 2118 4144 ##STR00624## Cl H ##STR00625## 8.2 615.1617.1619.1 81 2119 4145 ##STR00626## Cl H ##STR00627## 6.4 614.2616.2618.2 48 2120 4146 ##STR00628## Cl H ##STR00629## 8.7 613.2615.2617.2 37.5 2123 4147 ##STR00630## Cl H ##STR00631## 5.3 642.2644.2645.2 52 2133 4148 ##STR00632## Cl H ##STR00633## 6.9 634.1636.1638.1(M - H).sup.- 11 2134 4149 ##STR00634## Cl H ##STR00635## 7.9 639.1641.1643.1(M - H).sup.- 16.5 2135 4150 ##STR00636## Cl H ##STR00637## 8.3 605.1607.0609.0(M - H).sup.- 19 2140 4151 ##STR00638## Cl F ##STR00639## 4.7 517.1519.1520.1(M - H).sup.- 22.5 2149 4152 ##STR00640## Cl H ##STR00641## 7.8 654.2656.2658.2 36.5 2150 4153 ##STR00642## Cl H ##STR00643## 6.77 662.2664.2666.2 127 2153 4154 ##STR00644## Cl H ##STR00645## 4.9 670.1672.1674.0 10.5 2155 4155 ##STR00646## Cl F ##STR00647## 5.0 604.1606.1608.0 9.15 2156 4156 ##STR00648## Cl F ##STR00649## 5.13 632.2634.2636.0 36.5 2157 4157 ##STR00650## Cl F ##STR00651## 5.6 640.1642.1644.0 5.95 2158 4158 ##STR00652## Cl H --C(Me).sub.2COOH 7.0 598.1600.1602.0 208.5 2159 4159 ##STR00653## Cl H --C(Me).sub.2COOH 7.0 598.1600.1602.1 136.5 2161 4160 ##STR00654## Cl F ##STR00655## 5.6 672.1674.1676.0 114 2167 4161 ##STR00656## Cl H --C(Me).sub.2COOH 6.3 524.0526.0528.0 223.5 2168 4162 ##STR00657## Cl H --C(Me).sub.2COOH 6.3 524.0526.0528.0529.0 99 2170 4163 ##STR00658## Cl F ##STR00659## 4.4 545.1547.1549.0(M - H).sup.- 83 2171 4164 ##STR00660## Cl F ##STR00661## 5.4 668.1670.1672.1 18.5 2172 4165 ##STR00662## Cl F ##STR00663## 5.5 641.2643.2645.0 67.5 2173 4166 ##STR00664## Cl F ##STR00665## 5.4 669.2671.2673.0 126 2174 4167 ##STR00666## Cl H ##STR00667## 5.4 623.2625.2627.0 39.5 2175 4168 ##STR00668## Cl H ##STR00669## 5.3 651.2653.2655.0 107.5 2176 4169 ##STR00670## Cl F ##STR00671## 5.8 562.1564.1566.0(M - H).sup.- 9.2 2178 4170 ##STR00672## Cl F ##STR00673## 4.8 660.2662.2664.0 33.5 2179 4171 ##STR00674## Cl F ##STR00675## 4.8 632.2634.2636.0 31.5 2180 4172 ##STR00676## Cl H --C(Me).sub.2COOH 5.7 602.2604.2606.0 578.5 2181 4173 ##STR00677## Cl H --C(Me).sub.2COOH 9.0 544.2546.1548.2 51 2184 4174 ##STR00678## Cl H --C(Me).sub.2COOH 6.6 530.1532.1534.1 34 2186 4175 ##STR00679## Cl F ##STR00680## 5.5 617.2619.2621.1 67 2187 4176 ##STR00681## Cl F ##STR00682## 4.7 632.2634.2636.0 108 2190 4177 ##STR00683## Cl F ##STR00684## 4.9 571.1573.1575.0(M - H).sup.- 23 2191 4178 ##STR00685## CH.sub.3 F ##STR00686## 5.8 620.2622.2624.0 26 2192 4179 ##STR00687## Cl H --C(Me).sub.2COOH 6.5 530.1532.1534.0 467.5 2193 4180 ##STR00688## CH.sub.3 H ##STR00689## 5.7 602.2604.2606.0 71 2194 4181 ##STR00690## Cl H --C(Me).sub.2CH.sub.2COOH 5.8 544.1546.1548.0 26.5 2195 4182 ##STR00691## Cl H ##STR00692## 6.8 613.2615.2617.0 58.5 2196 4183 ##STR00693## Cl H ##STR00694## 9.3 669.1671.1673.1 61 2197 4184 ##STR00695## Cl H ##STR00696## 8.8 631.1633.1635.1(M - H).sup.- 30.5 2198 4185 ##STR00697## Cl H ##STR00698## 8.9 636.1638.1640.1 55.5 2203 4186 ##STR00699## Cl H ##STR00700## 4.7 608.2610.2612.0 12 2205 4187 ##STR00701## Cl H --C(Me).sub.2COOH 6.7 548.1550.1552.0 61.5 2210 4188 ##STR00702## Cl H ##STR00703## 5.1 635.2637.2639.0 24 2213 4189 ##STR00704## Cl H ##STR00705## 5.7 616.1618.1620.1 19.5 2214 4190 ##STR00706## Cl H ##STR00707## 5.5 545.2547.2549.0 59.5 2215 4191 ##STR00708## Cl H ##STR00709## 6.0 622.2624.2626.0 4.75 2216 4192 ##STR00710## Cl H ##STR00711## 4.7 558.2560.2562.0 7.9 2217 4193 ##STR00712## Cl H ##STR00713## 5.1 651.2653.2655.0 29 2218 4194 ##STR00714## Cl H ##STR00715## 4.7 621.1623.1625.1626.1 45 2219 4195 ##STR00716## Cl H ##STR00717## 5.0 627.2629.2631.0 22.5 2224 4196 ##STR00718## Cl H --C(Me).sub.2COOH 7.3 558.1560.1562.1 198 2225 4197 ##STR00719## Cl H ##STR00720## 8.6 619.1621.1623.1(M - H).sup.- 57.5 2227 4198 ##STR00721## Cl F ##STR00722## 4.8 645.2647.2649.2 22 2228 4199 ##STR00723## Cl H --C(Me).sub.2OH 8.6 518.1520.1522.0 32 2229 4200 ##STR00724## Cl H --C(Me).sub.2COOH 8.8 546.1548.1550.0 35.5 2230 4201 ##STR00725## Cl H ##STR00726## 6.4 515.1517.1519.0(M - H).sup.- 52 2231 4202 ##STR00727## Cl H ##STR00728## 6.1 643.2645.2647.1 106.5 2232 4203 ##STR00729## Cl H ##STR00730## 6.9 667.1669.1671.0 164 2233 4204 ##STR00731## Cl H ##STR00732## 6.6 686.2688.2690.1 35 2234 4205 ##STR00733## Cl H ##STR00734## 7.6 638.1640.1642.1 28.5 2235 4206 ##STR00735## Cl H --C(Me).sub.2COOH 7.0 564.1566.1568.1 152 2236 4207 ##STR00736## Cl H --C(Me).sub.2COOH 5.8 490.1492.1494.0 442 2237 4208 ##STR00737## Cl H ##STR00738## 6.0 622.2624.1626.0 6.9 2238 4209 ##STR00739## Cl F ##STR00740## 4.6 632.0634.0636.0 46 2240 4210 ##STR00741## Cl H ##STR00742## 6.2 684.0686.0688.0 15.5 2242 4211 ##STR00743## Cl H --C(Me).sub.2COOH 7.0 598.1600.1602.0 482.5 2243 4212 ##STR00744## Cl H --C(Me).sub.2COOH 6.0 508.0510.0512.0 361.5 2247 4213 ##STR00745## Cl H --C(Me).sub.2COOH 5.9 544.1546.0548.0 32.5 2248 4214 ##STR00746## Cl H ##STR00747## 5.2 558.0560.0562.0 19.5 2255 4215 ##STR00748## Cl F ##STR00749## 6.7 656.9658.9660.0 56.5 2256 4216 ##STR00750## Cl F ##STR00751## 5.9 656.9658.9660.0 41 2259 4217 ##STR00752## Cl F ##STR00753## 6.0 653.0655.0657.0 90.5 2261 4218 ##STR00754## Cl H --C(Me).sub.2COOH 7.6 567.9569.9571.9573.0 31.5 2262 4219 ##STR00755## Cl H --C(Me).sub.2COOH 9.2 624.0626.0628.0630.0 97

2263 4220 ##STR00756## Cl H ##STR00757## 5.6 537.0538.9540.9(M - H).sup.- 97.5 2264 4221 ##STR00758## Cl H ##STR00759## 6.9 593.0595.0596.9599.0(M - H).sup.- 107.5 2265 4222 ##STR00760## Cl H ##STR00761## 6.5 660.0662.0664.0666.0 11.5 2266 4223 ##STR00762## Cl H ##STR00763## 8.3 716.0718.0720.0722.0 30 2267 4224 ##STR00764## Cl H ##STR00765## 6.5 721.0723.0725.0727.0 101 2268 4225 ##STR00766## Cl H ##STR00767## 7.5 745.0747.0749.0751.0 161.5 2276 4226 ##STR00768## Cl H ##STR00769## 7.2 764.0766.0768.0770.0 52 2277 4227 ##STR00770## Cl H ##STR00771## 5.8 557.0559.0561.030.5 2284 4228 ##STR00772## Cl H ##STR00773## 5.3 613.1615.1617.0 30 2285 4229 ##STR00774## Cl H ##STR00775## 5.4 625.0627.0629.0 15 2286 4230 ##STR00776## Cl F ##STR00777## 6.5 708.0710.0712.0 30.5 2287 4231 ##STR00778## Cl H ##STR00779## 5.6 556.0558.0560.0(M - H).sup.- 16 2288 4232 ##STR00780## Cl H ##STR00781## 6.9 587.1589.0591.0 10 2289 4233 ##STR00782## Cl H ##STR00783## 7.8 613.1615.1617.0 9.35 2293 4234 ##STR00784## Cl H ##STR00785## 7.1 601.1603.1605.0 15.5 2294 4235 ##STR00786## Cl H ##STR00787## 5.4 682.1684.1686.0 718 2295 4236 ##STR00788## Cl F ##STR00789## 5.5 713.0715.0717.0 250 2297 4237 ##STR00790## Cl F ##STR00791## 5.7 570.0572.0574.0 91.5 2304 4238 ##STR00792## Cl H ##STR00793## 6.9 601.1603.1605.0 7.8 2305 4239 ##STR00794## Cl H ##STR00795## 7.1 615.1617.1619.0 8.2 2311 4240 ##STR00796## Cl H --C(Me).sub.2COOH 8.7 544.1546.1548.1 174.5 2316 4241 ##STR00797## Cl H ##STR00798## 6.5 663.2665.2667.0 30.5 2321 4242 ##STR00799## Cl H ##STR00800## 7.2 703.1705.1707.0 854 2322 4243 ##STR00801## Cl H --C(Me).sub.2COOH 7.4 533.1535.1537.0 140.5 2325 4244 ##STR00802## Cl H ##STR00803## 8.3 668.2670.2672.0 216.5 2326 4245 ##STR00804## Cl H ##STR00805## 6.5 628.2630.2632.0 458.5 2332 4246 ##STR00806## Cl H ##STR00807## 6.9 613.2615.2617.0 212.5 2333 4247 ##STR00808## Cl H ##STR00809## 7.4 636.2638.2640.0 19 2336 4248 ##STR00810## Cl F ##STR00811## 7.3 708.1710.1712.0 30.5 2337 4249 ##STR00812## Cl H ##STR00813## 8.3 610.1612.1614.0 202.5 2338 4250 ##STR00814## Cl F ##STR00815## 6.3 585.1587.1589.0(M - H).sup.- 51.5

TABLE-US-00006 TABLE 5 ##STR00816## wherein R.sup.1, R.sup.5 and R.sup.6 are given in the table below: t.sub.R MS IC.sub.50 BI21 Cpd R.sup.1 --N(R.sup.5)R.sup.6 (min) (MH.sup.+) mut (nM) 1628 5001 ##STR00817## ##STR00818## 7.0 590.1592.1594.0 71 1629 5002 ##STR00819## ##STR00820## 7.0 589.1591.1593.0 137 1630 5003 ##STR00821## ##STR00822## 5.2 592.2594.2593.0 48 1631 5004 ##STR00823## ##STR00824## 6.7 579.1581.1583.1 41 1632 5005 ##STR00825## ##STR00826## 6.5 670.2672.2674.0 216 1633 5006 ##STR00827## ##STR00828## 5.4 594.1596.1598.0 374 1634 5007 ##STR00829## ##STR00830## 5.3 622.2624.2626.2 244 1635 5008 ##STR00831## ##STR00832## 6.8 682.2684.2686.2 861 1637 5009 ##STR00833## ##STR00834## 7.1 601.1603.1605.1 131 1638 5010 ##STR00835## ##STR00836## 7.1 629.1631.1633.0 402 1639 5011 ##STR00837## ##STR00838## 6.9 601.1603.1605.1 69 1640 5012 ##STR00839## ##STR00840## 5.7 628.2630.2632.0 466 1641 5013 ##STR00841## ##STR00842## 6.8 601.1603.1605.0 150 1642 5014 ##STR00843## ##STR00844## 6.5 595.1597.1599.1 146 1643 5015 ##STR00845## ##STR00846## 6.1 553.1555.1557.0 158 1644 5016 ##STR00847## ##STR00848## 6.9 629.2631.2633.0 116 1645 5017 ##STR00849## ##STR00850## 6.7 664.1666.1668.1 55 1646 5018 ##STR00851## ##STR00852## 6.1 597.1599.1601.1 92 1647 5019 ##STR00853## ##STR00854## 6.6 631.1633.1635.1 78 1648 5020 ##STR00855## ##STR00856## 6.3 567.1569.1571.1 163 1649 5021 ##STR00857## ##STR00858## 6.7 645.2647.1649.1 181 1650 5022 ##STR00859## ##STR00860## 6.9 629.1631.1633.0 106 1652 5023 ##STR00861## ##STR00862## 6.9 643.1645.1647.1 38 1653 5024 ##STR00863## ##STR00864## 5.3 612.2614.2616.0 66 1654 5025 ##STR00865## ##STR00866## 6.3 581.1683.1585.0 124 1655 5026 ##STR00867## ##STR00868## 5.5 614.2616.2618.0 86 1656 5027 ##STR00869## ##STR00870## 6.7 643.1645.1647.1 51 1657 5028 ##STR00871## ##STR00872## 6.5 621.2623.2625.2 39 1658 5029 ##STR00873## ##STR00874## 6.7 632.1634.1636.0 34 1659 5030 ##STR00875## ##STR00876## 6.7 593.2595.2597.0 116 1660 5031 ##STR00877## ##STR00878## 6.7 649.2651.2653.0 118 1932 5032 ##STR00879## ##STR00880## 5.7 605.1607.1609.1 51.5 1972 5033 ##STR00881## ##STR00882## 5.0 584.1566.0588.0 124.5 1973 5034 ##STR00883## ##STR00884## 5.1 598.1600.0602.0 357 1974 5035 ##STR00885## ##STR00886## 5.0 598.1600.1602.0 257.5 1975 5036 ##STR00887## ##STR00888## 5.0 598.1600.1602.0 271 1976 5037 ##STR00889## ##STR00890## 5.0 612.2614.2616.0 174 1991 5038 ##STR00891## ##STR00892## 5.5 614.0616.0618.0 557.5 1992 5039 ##STR00893## ##STR00894## 5.4 614.0616.0618.0 479 1993 5040 ##STR00895## ##STR00896## 5.4 614.1616.0618.0 563 1994 5041 ##STR00897## ##STR00898## 5.5 628.1630.0632.0 131.5

TABLE-US-00007 TABLE 6 ##STR00899## wherein R.sup.1, R.sup.5 and R.sup.6 are given in the table below: t.sub.R MS IC.sub.50 BI21 Cpd R.sup.1 --N(R.sup.5)R.sup.6 (min) (MH.sup.+) mut (nM) 1400 6001 ##STR00900## ##STR00901## 7.2 613.1615.1617.0 69 1593 6002 ##STR00902## ##STR00903## 6.9 519.2521.2523.0 31 1594 6003 ##STR00904## ##STR00905## 7.1 559.2561.2563.2 13 1595 6004 ##STR00906## ##STR00907## 5.1 562.2564.2566.0 398 1596 6005 ##STR00908## ##STR00909## 6.9 549.2551.2553.0 564 1597 6006 ##STR00910## ##STR00911## 6.7 640.3642.3644.0 46 1598 6007 ##STR00912## ##STR00913## 6.2 564.2566.2568.0 30 1599 6008 ##STR00914## ##STR00915## 5.3 570.2572.2574.0 26 1600 6009 ##STR00916## ##STR00917## 5.9 652.3654.3656.0 73 1601 6010 ##STR00918## ##STR00919## 7.5 570.2572.2574.0 168 1602 6011 ##STR00920## ##STR00921## 7.2 571.2573.2575.0 26 1603 6012 ##STR00922## ##STR00923## 5.8 598.3600.3602.0 47 1604 6013 ##STR00924## ##STR00925## 6.9 571.2573.2575.0 34 1605 6014 ##STR00926## ##STR00927## 7.0 599.2601.2603.0 34 1606 6015 ##STR00928## ##STR00929## 6.6 565.2567.2569.2 39 1607 6016 ##STR00930## --NH(CH.sub.2).sub.2OH 6.1 523.2525.2527.0 35 1608 6017 ##STR00931## ##STR00932## 6.9 599.3601.3603.0 33 1609 6018 ##STR00933## ##STR00934## 6.0 567.2569.2571.2 28 1610 6019 ##STR00935## ##STR00936## 6.7 601.2603.2605.2 36 1611 6020 ##STR00937## ##STR00938## 6.7 615.3617.3619.3 51 1612 6021 ##STR00939## ##STR00940## 7.0 599.2601.2603.0 58 1613 6022 ##STR00941## ##STR00942## 7.0 625.2627.2629.0 14 1615 6023 ##STR00943## ##STR00944## 5.3 584.3586.3588.0 22 1617 6024 ##STR00945## --NH(CH.sub.2).sub.2CO.sub.2H 6.3 551.2553.2555.0 41 1618 6025 ##STR00946## ##STR00947## 6.9 611.2613.2615.0 41 1621 6026 ##STR00948## ##STR00949## 5.6 584.1586.1588.1 51 1622 6027 ##STR00950## ##STR00951## 6.7 606.2608.2610.0 59 1623 6028 ##STR00952## ##STR00953## 5.2 592.2594.2596.0 55 1624 6029 ##STR00954## ##STR00955## 5.5 556.1558.1560.1 22 1625 6030 ##STR00956## ##STR00957## 6.4 591.2593.2595.2 919 1893 6031 ##STR00958## ##STR00959## 7.1 627.2629.2631.0 29.5 1894 6032 ##STR00960## ##STR00961## 7.3 639.2641.2643.0 20.5 2037 6033 ##STR00962## --NHC(Me).sub.2COOH 5.5 546.9548.9550.9 298 2050 6034 ##STR00963## ##STR00964## 5.4 568.1570.1572.1(M - H).sup.- 44.5 2051 6035 ##STR00965## ##STR00966## 5.4 582.1584.1586.1(M - H).sup.- 39 2067 6036 ##STR00967## --NHSO.sub.2CH.sub.3 6.5 539.0541.0543.0(M - H).sup.- 146 2090 6037 ##STR00968## ##STR00969## 7.5 601.0603.0605.0(M - H).sup.- 111.5 2151 6038 ##STR00970## ##STR00971## 6.1 570.1572.1574.0 64.5 2152 6039 ##STR00972## ##STR00973## 5.9 568.1570.1572.1(M - H).sup.- 104

TABLE-US-00008 TABLE 7 ##STR00974## wherein W is given in the table below: t.sub.R MS IC.sub.50 BI21 Cpd W (min) (MH.sup.+) mut (nM) 1734 7001 ##STR00975## 10.4 570.0572.0574.0 116 1735 7002 ##STR00976## 10.4 570.1572.1574.0 187 1738 7003 ##STR00977## 9.9 591.1593.0595.0 607 1739 7004 ##STR00978## 10.0 605.1607.0609.0 272 1742 7005 ##STR00979## 10.5 555.1557.1559.1 106 1743 7006 ##STR00980## 11.0 642.2644.0646.0 74 1740 7007 ##STR00981## 9.8 597.0599.0601.0 331 1748 7008 ##STR00982## 10.0 582.1584.0586.0(M - H).sup.- 428 1749 7009 ##STR00983## 9.2 612.1614.1616.0(M - H).sup.- 43 1750 7010 ##STR00984## 9.7 521.1523.1525.0 83 1812 7011 ##STR00985## 9.9 571.1573.1575.0 181 1814 7012 ##STR00986## 10.0 571.2573.2574.2 128 1815 7013 ##STR00987## 11.3 589.0591.1593.1595.0 121 1816 7014 ##STR00988## 11.5 571.2573.2575.0 415 1817 7015 ##STR00989## 11.0 599.1601.1603.0 189 1818 7016 ##STR00990## 11.0 599.2601.2603.0 145 1819 7017 ##STR00991## 11.1 614.2616.2618.0 170 1820 7018 ##STR00992## 11.1 559.2601.2603.0 100 1821 7019 ##STR00993## 11.0 614.1616.1618.0 25 1822 7020 ##STR00994## 10.3 531.2533.2533.0 69 1823 7021 ##STR00995## 11.2 547.1549.1551.0 262 1824 7022 ##STR00996## 11.6 561.1563.1565.0 629 1825 7023 ##STR00997## 11.6 561.2563.1565.0 255 1827 7024 ##STR00998## 11.5 549.2551.2553.0 414 1828 7025 ##STR00999## 11.1 612.2614.2616.2(M - H).sup.- 154 1829 7026 ##STR01000## 10.8 575.2577.2579.0 88 1830 7027 ##STR01001## 9.9 599.1601.1603.0 134 1831 7028 ##STR01002## 8.7 551.1553.1555.0 123 1835 7029 ##STR01003## 9.9 599.1601.1603.0 88 1836 7030 ##STR01004## 7.7 570.1572.1574.0 38 1837 7031 ##STR01005## 7.7 570.1572.1573.1 43 1838 7032 ##STR01006## 7.8 570.1572.1574.0 30 1912 7033 ##STR01007## 6.3 626.0628.0630.0 21.5 1913 7034 ##STR01008## 6.8 609.0611.0613.0 201 1914 7035 ##STR01009## 6.8 603.0605.0607.0609.0 100 1915 7036 ##STR01010## 6.2 637.0639.0641.0643.0 712.5 1916 7037 ##STR01011## 5.3 612.1614.0616.0 236.5 1917 7038 ##STR01012## 6.8 583.1585.0587.0 860 1918 7039 ##STR01013## 6.8 599.0601.0603.0 89.5 1919 7040 ##STR01014## 5.9 561.0563.0565.0 42.5 1920 7041 ##STR01015## 7.0 597.1599.0601.0 336.5 1924 7042 ##STR01016## 6.5 585.0587.0589.0 27 1925 7043 ##STR01017## 6.6 608.1610.0612.0 145 1928 7044 ##STR01018## 6.9 583.0585.0587.0 334.5 1930 7045 ##STR01019## 102 637.2639.0641.0 432 1942 7046 ##STR01020## 8.2 584.1586.1588.0(M - H).sup.- 140 2005 7047 ##STR01021## 7.9 586.0588.0590.0 43.5 2006 7048 ##STR01022## 7.8 586.0588.0590.0 97

Claims

What is claimed is:

1. A compound of formula (I): ##STR01023## wherein Ar is a tetrazole ring and wherein the groups X and R.sup.1 are attached to positions on the Ar ring which are immediately adjacent to each other; X is S; R.sup.1 is a group of formula: ##STR01024## R.sup.11 is halo; and R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are each independently selected from H, halo, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, cyano, --O--(C.sub.1-4)alkyl, --OCF.sub.3 and --N((C.sub.1-4)alkyl).sub.2, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or R.sup.12 and R.sup.13, R.sup.13 and R.sup.14, or R.sup.14 and R.sup.15 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N, wherein the remaining of R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are defined as hereinbefore; R.sup.2 is halo; R.sup.3 is selected from H and halo; R.sup.4 is --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COOH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COOH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2-(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R.sup.962 is phenyl, --COOH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COOH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COOH, --C(.dbd.O)O--(C.sub.1-4)alkyl-N H(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, --O-Het, and Het; provided that the carbon atom of --O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein each of said Het and the Het portion of said --O-Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; and wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COOH; wherein Het is a 4,5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2; or a tautomer, salt or ester thereof.

2. The compound according to claim 1 wherein Ar is ##STR01025## wherein the designation ##STR01026## represents the bond to R.sup.1 and the designation ##STR01027## represents the bond to X.

3. The compound according to claim 1 wherein R.sup.11 is chloro or bromo.

4. The compound according to claim 1 wherein R.sup.12 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl and halo or R.sup.12 and R.sup.13 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

5. The compound according to claim 4 wherein R.sup.12 is H, CF.sub.3 or cyclopropyl.

6. The compound according to claim 1 wherein R.sup.13 is selected from H, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, --N((C.sub.1-4)alkyl).sub.2 and --OCF.sub.3; wherein the (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or wherein R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

7. The compound according to claim 6 wherein R.sup.13 is H, methyl, 1,1-dimethylethyl or cyclopropyl.

8. The compound according to claim 6 wherein R.sup.14 is selected from H, halo, cyano, (C.sub.1-4alkyl, CF3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, --O--(C.sub.1-4)alkyl, and --N((C.sub.1-4)alkyl).sub.2 or R.sup.13 and R.sup.14 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N.

9. The compound according to claim 8 wherein R.sup.14 is H, cyclopropyl or CF.sub.3.

10. The compound according to claim 1 wherein R.sup.15 is selected from H, halo, (C.sub.1-4)alkyl and CF.sub.3.

11. The compound according to claim 1 wherein R.sup.2is chloro.

12. The compound according to claim 1 wherein R.sup.3 is H or fluoro.

13. The compound according to claim 1 wherein R.sup.4 is --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COCH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COCH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4)alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with --OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sub.1-4)alkyl and R.sup.94 is selected from H, --(C.sup.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2--(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sup.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COOH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COOH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sub.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl--R.sup.962, wherein R961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R962 is phenyl, --COCH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COCH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COCH, --C(.dbd.O)O--(C.sub.1-4)alkyl-NH(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sup.2, --NH--(C.sub.3-7)cycloalkyl, -13 O-Het, and Het; provided that the carbon atom of O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein each of said Het and the Het portion of said --O-Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; and wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sup.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or ---COCH; wherein Het is in each instance independently a 4, 5- or 6-membered saturated, unsaturated or aromatic monocyclic heterocycle containing from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sup.2.

14. The compound according to claim 13 wherein R.sup.9 is selected from: i) H, --COCH, phenyl, ethenyl or 2-propenyl; ii) cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, each of which being optionally substituted with --OH, --COCH or CH.sub.3, wherein said CH.sub.3 is optionally substituted with OH or -N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is ##STR01028## or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with one or two substituents each independently selected from CH.sub.3 and --OH; iii) methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, pentyl or 1-ethylpropyl, each of which being optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NHCH.sub.3, CF.sub.3, --COOH, --COOCH.sub.3 or COOCH.sub.2CH.sub.3; b) Het optionally substituted with CH.sub.3 or --OH; wherein Het is selected from ##STR01029## c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H, CH.sub.3 or CH.sub.2CH.sub.3 and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2-CH.sub.3 and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is COCH, --C(.dbd.O)NH.sub.2, cyclopropyl, Het, or phenyl optionally substituted with --OH; wherein Het is selected from ##STR01030## and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, cyclopropyl or Het; wherein Het is selected from ##STR01031## and wherein said cyclopropyl is optionally substituted with --COCH and wherein said Het is optionally substituted with CH.sub.3 or --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with --COCH, --NH.sub.2, --NH(C.sub.1-4)alkyl, ##STR01032## --N(C.sub.1-4)alkyl.sub.2, or Het; wherein Het is selected from ##STR01033## and wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COCH and (C.sub.1-4)alkyl optionally substituted with ##STR01034## and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with ##STR01035## d) --C(.dbd.O)N(R.sup.95)R.sup.96 , wherein R.sup.95 is H and R.sup.96 is selected from cyclopropyl, --SO.sub.2--R.sub.961 and --(C.sub.1-4)alkyl--R.sup.962, wherein R.sup.961 is CH.sub.3, CH.sub.2CH.sub.3, phenyl, cyclopropyl, or --N(CH.sub.3).sub.2; and R.sup.962 is phenyl, --COCH, --N(CH.sub.3).sub.2, or Het; wherein Het is selected from ##STR01036## and wherein said phenyl is optionally substituted with --N(CH.sub.3).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with COCH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COCH, --C(.dbd.O)O--CH.sub.2CH.sub.2--NHCH.sub.3, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, ##STR01037## and Het; provided that the carbon atom of O--(C.sub.1-4)alkyl which is directly bonded to O is not also directly bonded to --OH, --NH.sub.2 or --NH--(C.sub.3-7)cycloalkyl; wherein Het is selected from ##STR01038## and wherein said Het is optionally substituted with one or two substituents each independently selected from halo, oxo, OH3 and OH; and wherein R.sup.971 is H or CH.sub.3 and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--CH.sub.3, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, cyclopropyl, phenyl and Het; wherein Het is selected from ##STR01039## and wherein said (C.sub.1-4)alkyl is optionally substituted with --OH, --COCH, --N(CH.sub.3).sub.2 or ##STR01040## provided that when R.sup.972 is (C.sub.1-4)alkyl, the carbon atom of (C.sub.1-4)alkyl which is directly bonded to N is not also directly bonded to --OH; and wherein said cyclopropyl is optionally substituted with --COCH, and wherein said phenyl is optionally substituted with --OH, --COCH, or --CH.dbd.CH--COOH; or R.sup.971 and R.sup.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain one or two further heteroatoms each independently selected from N and O; said heterocycle being optionally substituted with OH.sub.3 or --COCH.

15. A compound of formula (I): ##STR01041## wherein Ar is a tetrazole ring and wherein the groups X and R.sup.1 are attached to positions on the Ar ring which are immediately adjacent to each other; X is S; R.sup.1 is a group of formula: ##STR01042## R.sup.11 is halo; and R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are each independently selected from H, halo, (C.sub.1-4)alkyl, CF.sub.3, (C.sub.3-7)cycloalkyl, (C.sub.3-7)cycloalkyl-(C.sub.1-4)alkyl-, cyano, --O--(C.sub.1-4)alkyl, --OCF.sub.3 and --N((C.sub.1-4alkyl).sub.2, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with (C.sub.1-4)alkyl; or R.sup.12 and R.sup.13, R.sup.13 and R.sup.14, or R.sup.14 and R.sup.15 are linked, together with the carbon atoms to which they are attached, to form a five- or six-membered saturated, unsaturated or aromatic ring which optionally contains from one to three heteroatoms each independently selected from O, S and N, wherein the remaining of R.sup.12, R.sup.13, R.sup.14 and R.sup.15 are defined as hereinbefore; R.sup.2 is halo; R.sup.3 is selected from H and halo; R.sup.4 is --C.ident.C--R.sup.9 wherein R.sup.9 is selected from: i) H, --COCH, --COO(C.sub.1-6)alkyl, phenyl or (C.sub.2-4)alkenyl; ii) (C.sub.3-7)cycloalkyl optionally substituted with --OH, --COCH, --COO(C.sub.1-6)alkyl, or (C.sub.1-4alkyl wherein said (C.sub.1-4)alkyl is optionally substituted with OH or --N(R.sup.91)R.sup.92, wherein R.sup.91 is H and R.sup.92 is (C.sub.1-4)alkyl substituted with Het; or R.sup.91 and R.sup.92, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated, unsaturated or aromatic and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; and iii) (C.sub.1-6)alkyl optionally substituted with one, two or three substituents each independently selected from: a) --OH, --O(C.dbd.O)NH.sub.2, --O(C.dbd.O)NH(C.sub.1-4)alkyl, CF.sub.3, --COOH or --COO--(C.sub.1-4)alkyl; b) Het optionally substituted with (C.sub.1-6)alkyl or --OH; c) --N(R.sup.93)R.sup.94 wherein R.sup.93 is H or (C.sup.1-4)alkyl and R.sup.94 is selected from H, --(C.sub.1-4)alkyl optionally substituted with R.sup.941, --SO.sub.2--(C.sub.1-4)alkyl and --C(.dbd.O)--R.sup.942; wherein R.sup.941 is --COOH, --C(.dbd.O)NH.sub.2, (C.sub.3-7)cycloalkyl, Het, or phenyl optionally substituted with --OH, and R.sup.942 is --O--(C.sub.1-4)alkyl, --NH--(C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl or Het, wherein said (C.sub.3-7)cycloalkyl is optionally substituted with --COOH and wherein said Het is optionally substituted with one or two substituents each independently selected from (C.sub.1-6)alkyl and --OH; or R.sup.942 is (C.sub.1-4)alkyl optionally substituted with COCH, --NH.sub.2, --NH(C.sub.1-4)alkyl, --NH-Het, --N((C.sub.1-4)alkyl).sub.2, or Het; wherein said Het is optionally substituted with one or two substituents each independently selected from --OH, --COCH and (C.sub.1-6)alkyl optionally substituted with Het and wherein the (C.sub.1-4)alkyl portion of said --NH(C.sub.1-4)alkyl is optionally substituted with Het; d) --C(.dbd.O)N(R.sup.95)R.sup.96, wherein R.sup.95 is H and R.sup.96 is selected from (C.sup.3-7)cycloalkyl, --SO.sub.2--R.sup.961 and --(C.sub.1-4)alkyl-R.sup.962, wherein R.sup.961 is (C.sub.1-4)alkyl, phenyl, (C.sub.3-7)cycloalkyl, or --N((C.sub.1-4)alkyl).sub.2; and R962 is phenyl, COCH, --N((C.sub.1-4)alkyl).sub.2, or Het, wherein said phenyl is optionally substituted with --N((C.sub.1-4)alkyl).sub.2 and said Het is optionally substituted with oxo; or R.sup.95 and R.sup.96, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with --COCH; and e) --O(C.sub.1-4)alkyl optionally substituted with R.sup.97 wherein R.sup.97 is selected from --OH, --COCH, --C(.dbd.O)O--(C.sub.1-4)alkyl-NH(C.sub.1-4)alkyl, --C(.dbd.O)N(R.sup.971)R.sup.972, --NH.sub.2, --NH--(C.sub.3-7)cycloalkyl, O-Het, and Het wherein said Het is optionally substituted with one or two substituents each independently selected from halo, oxo, (C.sub.1-4)alkyl, and --OH; wherein R.sup.971 is H or (C.sub.1-4)alkyl and R.sup.972 is selected from H, --OH, --NHC(.dbd.O)--(C.sub.1-4)alkyl, --NHC(.dbd.O)--NH.sub.2, (C.sub.1-4)alkyl, (C.sub.3-7)cycloalkyl, phenyl and Het, wherein said (C.sub.1-4)alkyl).sub.2 is optionally substituted with --OH, --COOH, --N((C.sub.1-4)alkyl).sub.2 or Het, and wherein said (C.sub.3-7cycloalkyl is optionally substituted with --COOH, and wherein said phenyl is optionally substituted with --OH, --COOH, or --(C.sub.2-4)alkenyl-COOH; or R.sup.971 and R.sub.972, together with the N to which they are attached, are linked together to form a 5- or 6-membered heterocycle which may be saturated or unsaturated and which may optionally contain from one to three further heteroatoms each independently selected from N, O and S; said heterocycle being optionally substituted with (C.sub.1-4)alkyl or --COCH; wherein Het is a 5- or 6-membered heterocycle or a 9- or 10-membered heterobicycle, each of which may be saturated, unsaturated or aromatic and each of which may optionally contain from one to four heteroatoms each independently selected from N, O and S, wherein each said N heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to an O atom to form an N-oxide group and wherein each said S heteroatom may, independently and where possible, exist in an oxidized state such that it is further bonded to one or two oxygen atoms to form the groups SO or SO.sub.2; or a tautomer or pharmaceutically acceptable salt or ester thereof.

16. A pharmaceutical composition, comprising a compound according to claim 1, or a pharmaceutically acceptable salt or ester thereof, and a pharmaceutically acceptable carrier.